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Google Earth

Google Earth is a virtual globe, map and geographical information program that was originally called EarthViewer 3D, and was created by Keyhole, Inc, a Central Intelligence Agency (CIA) funded company acquired by Google in 2004 (see In-Q-Tel). It maps the Earth by the superimposition of images obtained from satellite imagery, aerial photography and GIS 3D globe. It was available under three different licenses, two currently: Google Earth, a free version with limited function; Google Earth Plus (discontinued),which included additional features; and Google Earth Pro ($399 per year), which is intended for commercial use.

The product, re-released as Google Earth in 2005, is currently available for use on personal computers running Windows 2000 and above, Mac OS X 10.3.9 and above, Linux kernel: 2.6 or later (released on June 12, 2006), andFreeBSD. Google Earth is also available as a browser plugin which was released on May 28, 2008.It was also made available for mobile viewers on the iPhone OS on October 28, 2008, as a free download from the App Store, and is available to Android users as a free app in the Google Play store. In addition to releasing an updated Keyhole based client, Google also added the imagery from the Earth database to their web-based mapping software, Google Maps. The release of Google Earth in June 2005 to the public caused a more than tenfold increase in media coverage on virtual globes between 2004 and 2005,driving public interest in geospatial technologies and applications. As of October 2011, Google Earth has been downloaded more than a billion times.

For other parts of the surface of the Earth, 3D images of terrain and buildings are available. Google Earth uses digital elevation model (DEM) data collected byNASA's Shuttle Radar Topography Mission (SRTM).This means one can view the whole earth in three dimensions. Since November 2006, the 3D views of many mountains, including Mount Everest, have been improved by the use of supplementary DEM data to fill the gaps in SRTM coverage.

Many people use the applications to add their own data, making them available through various sources, such as the Bulletin Board Systems (BBS) or blogsmentioned in the link section below. Google Earth is able to show all kinds of images overlaid on the surface of the earth and is also a Web Map Serviceclient. Google Earth supports managing three-dimensional Geospatial data through Keyhole Markup Language (KML).

DetailGoogle Earth is simply based on 3D maps, with the capability to show 3D buildings and structures (such as bridges), which consist of users' submissions using SketchUp, a 3D modeling program software. In prior versions of Google Earth (before Version 4), 3D buildings were limited to a few cities, and had poorer rendering with no textures. Many buildings and structures from around the world now have detailed 3D structures; including (but not limited to) those in the United States, Canada, Mexico, India, Japan, United Kingdom, Spain, Germany, Pakistan and the cities, Amsterdam and Alexandria. In August 2007, Hamburg became the first city entirely shown in 3D, including textures such as façades. The 'Westport3D' model was created by 3D imaging firm AM3TD using long-distance laser scanning technology and digital photography and is the first such model of an Irish town to be created. As it was developed initially to aid Local Government in carrying out their town planning functions it includes the highest resolution photo-realistic textures to be found anywhere in Google Earth. Three-dimensional renderings are available for certain buildings and structures around the world via Google's 3D Warehouse and other websites. In June 2012, Google announced that it will start to replace user submitted 3D buildings with auto-generated 3D mesh buildings starting with major cities. Although there are many cities on Google Earth that are fully or partially 3D, more are available in the Earth Gallery. The Earth Gallery is a library of modifications of Google Earth people have made. In the library there are more than just modifications for 3D buildings there are models of earth quakes using the Google Earth model, 3D forests, and much more.

Recently, around 2009, Google added a feature that allows users to monitor traffic speeds at loops located every 200 yards in real-time. In version 4.3 released on April 15, 2008, Google Street View was fully integrated into the program allowing the program to provide an on the street level view in many locations.
On January 31, 2010, the entirety of Google Earth's ocean floor imagery was updated to new images by SIO, NOAA, US Navy, NGA, andGEBCO. The new images have caused smaller islands, such as some atolls in the Maldives, to be rendered invisible despite their shores being completely outlined.

Bangkok

Phuket

Paris France

Google maps

Google Maps is a web mapping service application and technology provided by Google, that powers many map-based services, including the Google Maps website, Google Ride Finder, Google Transit,and maps embedded on third-party websites via the Google Maps API. It offers street maps, a route planner for traveling by foot, car, bike (beta), or with public transportation and a locator for urban businesses in numerous countries around the world. Google Maps satellite images are not updated in real time, but rather they are several months or years old.

Google Maps uses a close variant of the Mercator projection, so it cannot show areas around the poles. A related product is Google Earth, a stand-alone program which offers more globe-viewing features, including showing polar areas.

Satellite view
Google Maps provides high-resolution aerial or satellite images for most urban areas all over the world. Most of the world's current satellite imagery is over 5 years old and updated infrequently, resulting in not showing the newer features and updates that have been made to various infrastructures. Various governments have complained about the potential for terrorists to use the satellite images in planning attacks. Google has blurred some areas for security (mostly in the United States),previously the United States Capitol, the White House, and the U.S. Naval Observatory area (where the official residence of the Vice President is located). Other well-known government installations, including Area 51 in the Nevada desert, are visible.

Not all areas on satellite images are covered in the same resolution; less populated areas usually get less detail. With the introduction of an easily pannable and searchable mapping and satellite imagery tool, Google's mapping engine prompted a surge of interest in satellite imagery. Sites were established to feature satellite images of interesting natural and man-made landmarks, including such novelties as "large type" writing visible in the imagery, as well as famous stadiums and unique geological formations.Although Google uses the word satellite, most of the high-resolution imagery of cities is aerial photography taken from aircraft flying at 800–1500 feet rather than from satellites; while most other imagery is in fact from satellites.

This is a my home by satellite view.

satellite view floods in Bangkok 

This is a my home

Steve Jobs

Early life

Steven Jobs was born February 24, 1955, in San Francisco, California, and was adopted by Paul and Clara Jobs. He grew up with one sister, Patty. Paul Jobs was a machinist and fixed cars as a hobby. Jobs remembers his father as being very skilled at working with his hands.

In 1961 the family moved to Mountain View, California. This area, just south of Palo Alto, California, was becoming a center for electronics. Electronics form the basic elements of devices such as radios, televisions, stereos, and computers. At that time people started to refer to the area as "Silicon Valley." This is because a substance called silicon is used in the manufacturing of electronic parts.

As a child, Jobs preferred doing things by himself. He swam competitively, but was not interested in team sports or other group activities. He showed an early interest in electronics and gadgetry. He spent a lot of time working in the garage workshop of a neighbor who worked at Hewlett-Packard, an electronics manufacturer.

Jobs also enrolled in the Hewlett-Packard Explorer Club. There he saw engineers demonstrate new products, and he saw his first computer at the age of twelve. He was very impressed, and knew right away that he wanted to work with computers.

While in high school Jobs attended lectures at the Hewlett-Packard plant. On one occasion he boldly asked William Hewlett (1931–2001), the president, for some parts he needed to complete a class project. Hewlett was so impressed he gave Jobs the parts, and offered him a summer internship at Hewlett-Packard.

College and travel

After graduating from high school in 1972, Jobs attended Reed College in Portland, Oregon, for two years. He dropped out after one semester to visit India and study eastern religions in the summer of 1974. In 1975 Jobs joined a group known as the Homebrew Computer Club. One member, a technical whiz named Steve Wozniak (1950–), was trying to build a small computer. Jobs became fascinated with the marketing potential of such a computer. In 1976 he and Wozniak formed their own company. They called it Apple Computer Company, in memory of a happy summer Jobs had spent picking apples. They raised $1,300 in startup money by selling Jobs's microbus and Wozniak's calculator. At first they sold circuit boards (the boards that hold the internal components of a computer) while they worked on the computer prototype (sample).

Apple and the personal computer era

Jobs had realized there was a huge gap in the computer market. At that time almost all computers were mainframes. They were so large that one could fill a room, and so costly that individuals could not afford to buy them. Advances in electronics, however, meant that computer components were getting smaller and the power of the computer was increasing.
Jobs and Wozniak redesigned their computer, with the idea of selling it to individual users. The Apple II went to market in 1977, with impressive first year sales of $2.7 million. The company's sales grew to $200 million within three years. This was one of the most phenomenal cases of corporate growth in U.S. history. Jobs and Wozniak had opened an entirely new market—personal computers. Personal computers began an entirely new way of processing information.
By 1980 the personal computer era was well underway. Apple was continually forced to improve its products to remain ahead, as more competitors entered the marketplace. Apple introduced the Apple III, but the new model suffered technical and marketing problems. It was withdrawn from the market, and was later reworked and reintroduced.
Jobs continued to be the marketing force behind Apple. Early in 1983 he unveiled the Lisa. It was designed for people possessing minimal computer experience. It did not sell well, however, because it was more expensive than personal computers sold by competitors. Apple's biggest competitor was International Business Machines (IBM). By 1983 it was estimated that Apple had lost half of its market share (part of an industry's sales that a specific company has) to IBM.

The Macintosh

In 1984 Apple introduced a revolutionary new model, the Macintosh. The on-screen display had small pictures called icons. To use the computer, the user pointed at an icon and clicked a button using a new device called a mouse. This process made the Macintosh very easy to use. The Macintosh did not sell well to businesses, however. It lacked features other personal computers had, such as a corresponding high quality printer. The failure of the Macintosh signaled the beginning of Jobs's downfall at Apple. Jobs resigned in 1985 from the company he had helped found, though he retained his title as chairman of its board of directors.

NeXT

Jobs soon hired some of his former employees to begin a new computer company called NeXT. Late in 1988 the NeXT computer was introduced at a large gala event in San Francisco, aimed at the educational market. Initial reactions were generally good. The product was very user-friendly, and had a fast processing speed, excellent graphics displays, and an outstanding sound system. Despite the warm reception, however, the NeXT machine never caught on. It was too costly, had a black-and-white screen, and could not be linked to other computers or run common software.

Toy Story

NeXT was not, however, the end of Steve Jobs. In 1986 Jobs purchased a small company called Pixar from filmmaker George Lucas (1944–). Pixar specialized in computer animation. Nine years later Pixar released Toy Story, a huge box office hit. Pixar later went on to make Toy Story 2 and A Bug's Life, which Disney distributed, and Monsters, Inc. All these films have been extremely successful. Monsters, Inc. had the largest opening weekend ticket sales of any animated film in history.

NeXT and Apple

In December of 1996 Apple purchased NeXT Software for over $400 million. Jobs returned to Apple as a part-time consultant to the chief executive officer (CEO). The following year, in a surprising event, Apple entered into a partnership with its competitor Microsoft. The two companies, according to the New York Times, "agreed to cooperate on several sales and technology fronts." Over the next six years Apple introduced several new products and marketing strategies.
In November 1997 Jobs announced Apple would sell computers directly to users over the Internet and by telephone. The Apple Store became a runaway success. Within a week it was the third-largest e-commerce site on the Internet. In September of 1997 Jobs was named interim CEO of Apple.
In 1998 Jobs announced the release of the iMac, which featured powerful computing at an affordable price. The iBook was unveiled in July 1999. This is a clam-shaped laptop that is available in bright colors. It includes Apple's AirPort, a computer version of the cordless phone that would allow the user to surf the Internet wirelessly. In January 2000 Jobs unveiled Apple's new Internet strategy. It included a group of Macintosh-only Internet-based applications. Jobs also announced that he was becoming the permanent CEO of Apple.

In a February 1996 Time magazine article, Jobs said, "The thing that drives me and my colleagues … is that you see something very compelling to you, and you don't quite know how to get it, but you know, sometimes intuitively, it's within your grasp. And it's worth putting in years of your life to make it come into existence." Jobs has worked hard to translate his ideas into exciting and innovative products for businesses and consumers. He was instrumental in launching the age of the personal computer. Steve Jobs is truly a computer industry visionary.

Printer

In computing, a printer is a peripheral which produces a representation of an electronic document on physical media such as paper or transparency film. Many printers are local peripherals connected directly to a nearby personal computer. Individual printers are often designed to support both local and network connected users at the same time. Some printers can print documents stored on memory cards or from digital cameras and scanners.Multifunction printers (MFPs) include a scanner and can copy paper documents or send a fax; these are also called multi-function devices (MFD), or all-in-one (AIO) printers. Most MFPs include printing, scanning, and copying among their many features.

Consumer and some commercial printers are designed for low-volume, short-turnaroundprint jobs; requiring virtually no setup time to achieve a hard copy of a given document. However, printers are generally slow devices (30 pages per minute is considered fast, and many inexpensive consumer printers are far slower than that), and the cost per page is actually relatively high. However, this is offset by the on-demand convenience and project management costs being more controllable compared to an out-sourced solution. Theprinting press remains the machine of choice for high-volume, professional publishing. However, as printers have improved in quality and performance, many jobs which used to be done by professional print shops are now done by users on local printers; see desktop publishing. Local printers are also increasingly taking over the process of photofinishing as digital photo printers become commonplace.

The world's first computer printer was a 19th-century mechanically driven apparatus invented by Charles Babbage for his difference engine.

A virtual printer is a piece of computer software whose user interface and API resembles that of a printer driver, but which is not connected with a physical computer printer.

Technology

Printers can be classified by the printer technology they employ, with many techniques being available as commercial products. The choice of print technology has a great effect on the cost of the printer and cost of operation, speed, quality and permanence of documents, and noise. Some printer technologies don't work with certain types of physical media, such ascarbon paper or transparencies.

A second aspect of printer technology that is often forgotten is resistance to alteration: liquidink, such as from an inkjet head or fabric ribbon, becomes absorbed by the paper fibers, so documents printed with liquid ink are more difficult to alter than documents printed with toner or solid inks, which do not penetrate below the paper surface.

Cheques can be printed with liquid ink or on special cheque paper with toner anchorage so that alterations may be detected. The machine-readable lower portion of a cheque must be printed using MICR toner or ink. Banks and other clearing houses employ automation equipment that relies on the magnetic flux from these specially printed characters to function properly.

Laptop

A laptop is a portable personal computer with a clams hell form factor, suitable for mobile use. A laptop has most of the same components as a desktop computer, including a display, a keyboard, a pointing device such as a touch pad (also known as a trackpad) and/or a pointing stick, and speakers into a single unit. A laptop is powered by mains electricity via an AC adapter, and can be used away from an outlet using a rechargeable battery. Laptops are also sometimes called notebook computers or notebooks. Other terms, such asultrabooks or net books, refer to specific types of laptop / notebook. Most of the modern day laptop computers also have a webcam and a mic (microphone) pre-installed.

Portable computers, originally monochrome CRT-based and developed into the modern laptops, were originally considered to be a small niche market, mostly for specialized field applications such as the military, accountants and sales representatives. As portable computers became smaller, lighter, cheaper, and more powerful and as screens became larger and of better quality, laptops became very widely used for a variety of purposes.

History

As the personal computer (PC) became feasible in the 1970s, the idea of a portable personal computer followed. A "personal, portable information manipulator" was imagined by Alan Kayat Xerox PARC in 1968, and described in his 1972 paper as the "Dynabook".

The IBM Special Computer APL Machine Portable (SCAMP), was demonstrated in 1973. This prototype was based on the IBM PALM processor (Put All Logic in Microcode or 128 bit).

The IBM 5100, the first commercially available portable computer, appeared in September 1975, and was based on the SCAMP prototype.

As 8-bit CPU machines became widely accepted, the number of portables increased rapidly. The Osborne 1, released in 1981, used the Zilog Z80 and weighed 23.6 pounds (10.7 kg). It had no battery, a 5 in (13 cm) CRT screen, and dual 5.25 in (13.3 cm) single-density floppy drives. In the same year the first laptop-sized portable computer, the Epson HX-20, was announced.The Epson had a LCD screen, a rechargeable battery, and a calculator-size printer in a 1.6 kg (3.5 lb) chassis. Both Tandy/RadioShack and HP also produced portable computers of varying designs during this period.

The first laptops using the flip form factor appeared in the early 1980s. The Dulmont Magnum was released in Australia in 1981–82, but was not marketed internationally until 1984–85. The US$8,150 (US$19,390 today) GRiD Compass 1100, released in 1982, was used at NASA and by the military among others. The Gavilan SC, released in 1983, was the first computer described as a "laptop" by its manufacturer.From 1983 onward, several new input techniques were developed and included in laptops, including the touchpad (Gavilan SC, 1983), the pointing stick (IBM ThinkPad 700, 1992) and handwriting recognition (Linus Write-Top, 1987). Some CPUs, such as the 1990 Intel i386SL, were designed to use minimum power to increase battery life of portable computers, and were supported by dynamic power management features such as Intel SpeedStep and AMD PowerNow! in some designs.

Displays reached VGA resolution by 1983 (Compaq SLT/286), and colour screens started becoming a common upgrade in 1991 with increases in resolution and screen size occurring frequently until the introduction of 17"-screen laptops in 2003. Hard drives started to be used in portables, encouraged by the introduction of 3.5" drives in the late 1980s, and became common in laptops starting with the introduction of 2.5" and smaller drives around 1990; capacities have typically lagged behind physically larger desktop drives. Optical storage, read-only CD-ROM followed by writeable CD and later read-only or writeable DVD and Blu-ray, became common in laptops early in the 2000s

Classification

he term "laptop" can refer to a number of classes of small portable computers

• Full-size Laptop: A laptop large enough to accommodate a "full-size" keyboard (a keyboard with the minimum QWERTY key layout, which is at least 13.5 keys across that are on ¾ (0.750) inch centers, plus some room on both ends for the case). The measurement of at least 11 inches across has been suggested as the threshold for this class.^[12] The first laptops were the size of a standard U.S. "A size" notebook sheet of paper (8.5 × 11 inches)^{[citation needed]}, but later "A4-size" laptops were introduced, which were the width of a standard ISO 216 A4 sheet of paper (297 mm, or about 11.7 inches), and added a vertical column of keys to the right and wider screens. It can also be laid sideways when not in use.
• Netbook: A smaller, lighter, and therefore more portable laptop with less computing power than traditional laptops. It is usually cheaper than a full-size laptop, and has fewer features. The smaller keyboards of a netbook can be more difficult to operate. There is no definitive demarcation between netbooks and inexpensive small laptops, some 11.6" models are marketed as netbooks. Since netbook laptops are quite small in size and designed to be light and inexpensive they typically do not come with an internal optical drive. The Asus Eee PC launched this product class, while the term was coined later by Intel. Most netbooks feature cheaper, slower, but more energy efficient CPUs, as compared to traditional laptops, such as the Intel Atom CPU.
• Tablet PC: These have touch screens. There are "convertible tablets" with a full keyboard where the screen rotates to be used atop the keyboard, a "hybrid tablet" where the keyboard can be detached from the screen, and "slate" form-factor machines which are usually touch-screen only (although a few older models feature very small keyboards along the sides of the screen.)
• Ultra-mobile PC: An ultra-mobile PC (ultra-mobile personal computer or UMPC) is a small form factor version of a pen computer, a class of laptop whose specifications were launched by Microsoft and Intel in spring 2006. Sony had already made a first attempt in this direction in 2004 with its Vaio U series, which was only sold in Asia. UMPCs are smaller than subnotebooks, have a TFT display measuring (diagonally) about 12.7 to 17.8 cm, and are operated like tablet PCs using a touchscreen or a stylus. This term is commonly (if inaccurately) used for small notebooks and/or netbooks.
• Handheld PC: A Handheld PC, or H/PC for short, is a term for a computer built around a form factor which is smaller than any standard laptop computer. It is sometimes referred to as a Palmtop. The first handheld device compatible with desktop IBM personal computers of the time was the Atari Portfolio of 1989. Other early models were the Poqet PC of 1989 and the Hewlett Packard HP 95LX of 1991. Other DOS compatible hand-held computers also existed.
• Rugged: Engineered to operate in tough conditions (mechanical shocks, extreme temperatures, wet and dusty environments, etc.)
• Ultrabook: A very thin version of a laptop usually less than an inch thick. Most versions of Ultrabooks contain SSD, or Solid-State Drives, instead of the common Laptop Hard Disk Drives. Although this term (like Netbook) was coined and popularized by Intel, one of the most prominent examples is Apple's Macbook Air.

Charles Babbage

Charles Babbage was born in London Dec. 26, 1791, St. Stephan day, in London. He was son of Benjamin Babbage, a banking partner of the Praeds who owned the Bitton Estate in Teignmouth and Betsy Plumleigh Babbage. It was about 1808 when the Babbage family decided to move into the old Rowdens house, located in East Teignmouth, and Benjamin Babbage became a warden of the nearby church of St. Michael. 

The father of Charles was a rich man, so it was possible for Charles to receive instruction from several elite schools and teachers during the course of his elementary education. He was about eight when he had to move to a country school to recover from a dangerous fever. His parents sentenced that his "brain was not to be taxed too much"; Babbage wrote: "this great idleness may have led to some of my childish reasonings." 
Then, he joined King Edward VI Grammar School in Totnes, South Devon, a thriving comprehensive school that's still operative today, but his fragile health status forced him back to private teaching for a period. Then, he finally joined a 30-student closed number academy managed by Reverend Stephen Freeman. The academy had a big library, where Babbage used to study mathematics by himself, and learned to love it. He had two more personal tutors after leaving the academy. One was a clergyman of Cambridge, and about him Babbage said: "I fear I did not derive from it all the advantages that I might have done.". The other one was an Oxford tutor who teached Babbage the Classics, so that he could be accepted to Cambridge. 

Babbage arrived at Trinity College, Cambridge in October 1810. He had a big culture - he knew Lagrange, Leibniz, Lacroix, Simpson... and he was seriously disappointed about the math programs available at Cambridge. So he, with J.Herschel, G.Peacock, and other friends, decided to form the Analytical Society. 

When, in 1812, Babbage transferred to Peterhouse, Cambridge, he was the best mathematician; but he failed to graduate with honours. 
He received an honorary degree later, without even being examinated, in 1814. 

In 1814, Charles Babbage married Georgiana Whitmore at St. Michael's Church in Teignmouth, Devon. His father, for some reason, never gave his approvation. They lived in tranquility at 5 Devonshire Street, Portland Place, London. 
Only Three of their 8 children became adult.
Tragically, Charles' father, his wife and one of his sons all died in 1827.

Children

• Benjamin Herschel Babbage (1815)
• Charles Whitmore Babbage (1817)
• Georgiana Whitmore Babbage (1818)
• Edward Stewart Babbage (1819)
• Francis Moore Babbage (1821)
• Dugald Bromheald Babbage (1823)
• Henry Prevost Babbage (1824)
• Alexander Forbes Babbage (1827)
• Timothy grant Babbage (1829)

Design of computers

In Babbage's times there was a really high error rate in the calculation of math tables, when Babbage planned to find a new method that could be use to make it mechanically, removing the human error factor. This idea started to tickle his brain very early, in 1812.
Three different elements influenced him in this decision: he disliked untidiness and unprecision; he was very able with logarithmical tables; he was inspired from an existing work on calculating machines produced by W. Schickard, B.Pascal, and G. Leibniz.
He discussed the main principles of a calculating engine in a letter he wrote to Sir H. Davy in the early 1822.

Difference engine

Babbage presented something that he called "difference engine" to the Royal Astronomical Society on Jun 14, 1822 and in a paper entitled "Note on the application of machinery to the computation of astronomical and mathematical tables." 
It was able to calculate polynomials by using a numerical method called the differences method. 
The Society approved the idea, and the government granted him £1500 to construct it, in 1823. Charles Babbage converted one of the rooms in his home to a workshop and hired Joseph Clement to oversee construction of the engine. Every part had to be formed by hand using custom machine tools, many of which Babbage himself designed. He took extensive tours of industry to better understand manufacturing processes. Based on these trips and his experience with the difference engine, Babbage published On the Economy of Machinery and Manufacture in 1832. It was the first publication on what we would now call operations research. 

The death of Georgiana, Babbage's father, and an infant son interrupted construction in 1827. Work had already taxed Babbage heavily and he was on the edge of a breakdown. John Herschel and several other friends convinced Babbage to take a trip to Europe to recuperate. He passed through the Netherlands, Belgium, Germany, and Italy visiting universities and manufacturing facilities. 

In Italy he learned he had been named the Lucasian Professor of Mathematics. He initially wanted to turn down the position but several friends convinced him to accept. He moved to 1 Dorset Street upon returning to England in 1828. 

The difference engine project had come under fire during Babbage's absence. Rumours had spread that Babbage had wasted the government's money; that the machine did not work; and that it had no practical value if it did. John Herschel and the Royal Society publicly defended the engine. The government continued its support, advancing £1500 on April 29, 1829, £3000 on December 3, and £3000 on February 24, 1830. Work continued, but Babbage would have continual difficulty getting money from the treasury. 

Babbage's problems with the treasury coincided with numerous disagreements with Clement. Babbage had built a two-story, 50 foot long workshop behind his house. It had a glass roof for lighting, and a fireproof, dust-free room to contain the machine. Clement refused to move his operations to the new workshop and demanded more money for the difficulty of travelling across town to oversee construction. In response, Babbage suggested that Clement draw his pay directly from the treasury. Before then, Babbage would get money from the government that he would use to pay Clement. He often had to pay Clement out of his own pocket when the bureaucracy lagged behind Clement's pay schedule. Clement refused the request and stopped working. 

Clement further refused to turn over the drawings and tools used to build the difference engine. After an investment of £23000, including £6000 of Babbage's own money, work on the unfinished machine ceased in 1834. Charles wrote, "The drawings and parts of the Engine are at length in a place of safety—I am almost worn out with disgust and annoyance at the whole affair." In 1842 the government officially abandoned the project.

Analytical engine

While he was separated from the difference engine, Babbage began to think about an improved calculating engine. Between 1833 and 1842 he tried to build a machine that would be programmable to do any kind of calculation, not just ones relating to polynomial equations. The first breakthrough came when he redirected the machine's output to the input for further equations. He described this as the machine "eating its own tail". It did not take much longer for him to define the main points of his analytical engine. 

The mature analytical engine used punched cards adapted from the Jacquard loom to specify input and the calculations to perform. The engine consisted of two parts: the mill and the store. The mill, analogous to a modern computer's CPU, executed the operations on values retrieved from the store, which we would consider memory. It was the world's first general-purpose computer. 

A design for this emerged by 1835. The scale of the work was truly incredible. Babbage and a handful of assistants created 500 large design drawings, 1000 sheets of mechanical notation, and 7000 sheets of scribbles. The completed mill would measure 15 feet tall and 6 feet in diameter. The 100 digit store would stretch to 25 feet long. Babbage constructed only small test parts for his new engine; a full engine was never completed. In 1842, following repeated failures to obtain funding from the First Lord of the Treasury, Babbage approached Sir Robert Peel for funding. Peel refused, and offered Babbage a knighthood instead. Babbage refused. He would continue modifying and improving the design for many years to come. 

In October 1842, Federico Luigi, Conte Menabrea, an Italian general and mathematician, published a paper on the analytical engine. Augusta Ada King, Countess of Lovelace, a longtime friend of Babbage, translated the paper into English. Charles suggested that she add notes to accompany the paper. In a series of letters between 1842 and 1843, the pair collaborated on seven notes, the combined length of which was three times longer than the actual paper. In one note Ada prepared a table of execution for a program that Babbage wrote to calculate the Bernoulli numbers. In another, she wrote about a generalized algebra engine that could perform operations on symbols as well as numbers. Lovelace was perhaps the first to grasp the more general goals of Babbage’s machine, and some consider her the world's first computer programmer. She began work on a book describing the analytical engine in more detail, but it was never finished.

Second Difference Engine

Between October 1846 and March 1849 Babbage started designing a second difference engine using knowledge gained from the analytical engine. It used only about 8000 parts, three times fewer than the first. It was a marvel of mechanical engineering. 

Unlike the analytical engine that he continually tweaked and modified, he did not try to improve the second difference engine after completing the initial design. Babbage made no attempt to actually construct the machine. 

The 24 schematics remained in the Science Museum archives until a full-size replica was built 1985-1991 to celebrate the 200th anniversary of Babbage’s birth. It measured 11 feet long, 7 feet high and 18 inches deep, and weighted 2.6 tonnes. The limits of precision were restricted to those achievable by Babbage.

Babbage's accomplishments

In 1824 Babbage won the Gold Medal of the Royal Astronomical Society "for his invention of an engine for calculating mathematical and astronomical tables". 

From 1828 to 1839 Babbage was Lucasian professor of mathematics at Cambridge. He contributed largely to several scientific periodicals, and was instrumental in founding the Astronomical Society in 1820 and the Statistical Society in 1834. 

In 1837, responding to the official eight Bridgewater Treatises "On the Power, Wisdom and Goodness of God, as manifested in the Creation", he published his Ninth Bridgewater Treatise putting forward the thesis that God had the omnipotence and foresight to create as a divine legislator, making laws (or programs) which then produced species at the appropriate times, rather than continually interfering with ad hoc miracles each time a new species was required. The book incorporated extracts from correspondence he had been having with John Herschel on the subject. 

Charles Babbage also achieved notable results in cryptography. He broke Vigenère's autokey cipher as well as the much weaker cipher that is called Vigenère cipher today. The autokey cipher was generally called "the undecipherable cipher", though owing to popular confusion, many thought that the weaker polyalphabetic cipher was the "undecipherable" one. Babbage's discovery was used to aid English military campaigns, and was not published until several years later; as a result credit for the development was instead given to Friedrich Kasiski, who made the same discovery some years after Babbage. 

Babbage also invented the pilot (also called a cow-catcher), the metal frame attached to the front of locomotives that clears the tracks of obstacles in 1838. He also performed several studies on Isambard Kingdom Brunel's Great Western Railway. 

He only once endeavoured to enter public life, when, in 1832, he stood unsuccessfully for the borough of Finsbury. He came in last in the polls. 
Parts of Babbage's uncompleted mechanisms are available for visits in the London Science Museum. In 1991 a difference engine was completed, starting from Babbage's original plans, and it functioned perfectly.

References and Bibliography

- Passages from the Life of a Philosopher (Charles Babbage).
- Charles Babbage: Pioneer of the Computer (Anthony Hyman). 
- Irascible Genius: A Life of Charles Babbage, Inventor (Maboth Moseley).
- The Cogwheel Brain (Doron Swade). A LUV.IT educational production.

External (unrelated) links:
Orosztanar Budapest. 
Games. 
Grossisti. 

This site will tell you Who is Charles Babbage, and you'll find - as well - Pictures of mathematician Charles Babbage and the Charles Babbage computer. Everything about Charles Babbage history and Charles Babbage difference engine models. 
If you are asking yourself what did Charles Babbage invent, this is the ultimate place to visit. And a lot of Photos of Charles Babbage! 

Charles Babbage Inventions. 
Interesting references and materials about Charles Babbage.

History of Computer

This document has been created with a listing of each of the first computers starting with the first automatic computing engines leading up to the computers of today. Keep in mind that early inventions such as the abacus,calculators, and tablet machines are not accounted for in this document.

The word "computer" was first used

The word "computer" was first recorded as being used in 1613 and was originally was used to describe a person who performed calculations or computations. The definition of a computer remained the same until the end of the 19th century when it began referring to a machine that performed calculations.

First mechanical computer or automatic computing engine concept

In 1822, Charles Babbage purposed and began developing theDifference Engine, considered to be the first automatic computing engine that was capable of computing several sets of numbers and making a hard copies of the results. Unfortunately, because of funding he was never able to complete a full-scale functional version of this machine. In June of 1991, the London Science Museum completed the Difference Engine No 2 for the bicentennial year of Babbage's birth and later completed the printing mechanism in 2000.

Later, in 1837 Charles Babbage proposed the first general mechanical computer, the Analytical Engine. The Analytical Engine contained an Arithmetic Logic Unit (ALU), basic flow control, and integrated memory and is the first general-purpose computer concept. Unfortunately, because of funding issues this computer was also never built while Charles Babbage's was alive. In 1910, Henry Babbage, Charles Babbage's youngest son was able to complete a portion of this machine and was able to perform basic calculations.

First programmable computer

The Z1, originally created by Germany's Konrad Zuse in his parents living room in 1936 to 1938 and is considered to be the first electro-mechanical binary programmable (modern) computer and really the first functional computer.

The first electric programmable computer

The Colossus was the first electric programmable computer and was developed by Tommy Flowers and first demonstrated in December 1943. The Colossus was created to help the British code breakers read encrypted German messages.

The first digital computer

Short for Atanasoff-Berry Computer, the ABC started being developed by Professor John Vincent Atanasoff and graduate student Cliff Berry in 1937 and continued to be developed until 1942 at the Iowa State College (now Iowa State University). The ABC was an electrical computer that used vacuum tubes for digital computation including binary math and Boolean logic and had no CPU. On October 19, 1973, the US Federal Judge Earl R. Larson signed his decision that the ENIAC patent by Eckert and Mauchly was invalid and named Atanasoff the inventor of the electronic digital computer.

The ENIAC was invented by J. Presper Eckert and John Mauchly at the University of Pennsylvania and began construction in 1943 and was not completed until 1946. It occupied about 1,800 square feet and used about 18,000 vacuum tubes, weighing almost 50 tons. Although the Judge ruled that the ABC computer was the first digital computer, many still consider the ENIAC to be the first digital computer because it was fully functional.

The first stored program computer

The early British computer known as the EDSAC is considered to be the first stored program electronic computer. The computer performed its first calculation on May 6, 1949 and was the computer that ran the first graphical computer game, nicknamed "Baby".

The first computer company

The first computer company was the Electronic Controls Company and was founded in 1949 by J. Presper Eckert and John Mauchly, the same individuals who helped create the ENIAC computer. The company was later renamed to EMCC or Eckert-Mauchly Computer Corporation and released a series of mainframe computers under the UNIVAC name.

First stored program computer

First delivered to the United States Government in 1950, theUNIVAC 1101 or ERA 1101 is considered to be the first computer that was capable of storing and running a program from memory.

First commercial computer

In 1942, Konrad Zuse begin working on the Z4, which later became the first commercial computer after being sold to Eduard Stiefel a mathematician of the Swiss Federal Institute of Technology Zurich on July 12, 1950.

The first PC (IBM compatible) computer

On April 7, 1953 IBM publicly introduced the 701, its first electric computer and first mass produced computer. Later IBM introduced its first personal computer called the IBM PC in 1981. The computer was code named and still sometimes referred to as theAcorn and had a 8088 processor, 16 KB of memory, which was expandable to 256 and utilizing MS-DOS.

The first computer with RAM

 MIT introduces the Whirlwind machine on March 8, 1955, a revolutionary computer that was the first digital computer with magnetic core RAM and real-time graphics.

The first transistor computer

The TX-O (Transistorized Experimental computer) is the first transistorizedcomputer to be demonstrated at the Massachusetts Institute of Technology in 1956.

The first minicomputer

In 1960, Digital Equipment Corporation released its first of many PDP computers the PDP-1.

The first mass-market PC

In 1968, Hewlett Packard began marketing the first mass-marketed PC, the HP 9100A.

The first workstation

Although it was never sold, the first workstation is considered to be the Xerox Alto, introduced in 1974. The computer was revolutionary for its time and included a fully functional computer, display, and mouse. The computer operated like many computers today utilizing windows, menus and icons as an interface to its operating system.

The first microprocessor

Intel introduces the first microprocessor, the Intel 4004 on November 15, 1971.

The first personal computer

In 1975, Ed Roberts coined the term "personal computer" when he introduced the Altair 8800. Although the first personal computer is considered by many to be the Kenback-1, which was first introduced for $750 in 1971. The computer relied on a series of switches for inputting data and output data by turning on and off a series of lights.

The Micral is considered the be the first commercial non-assembly computer. The computer used the Intel 8008 processor and sold for $1,750 in 1973.

The first laptop or portable computer

The IBM 5100 is the first portable computer, which was released on September 1975. The computer weighed 55 pounds and had a five inch CRT display, tape drive, 1.9MHz PALM processor, and 64KB of RAM. In the picture to the right, is an ad of the IBM 5100 taken from a November 1975 issue of Scientific America.

The first truly portable computer or laptop is considered to be the OsborneI, which was released on April 1981 and developed by Adam Osborne. The Osborne I weighed 24.5 pounds, had a 5-inch display, 64 KB of memory, two 5 1/4" floppy drives, ran the CP/M 2.2 operating system, included a modem, and cost US$179.

The IBM PC Division (PCD) later released the IBM portable in1984, it's first portable computer that weighed in at 30 pounds. Later in 1986, IBM PCD announced it's first laptop computer, the PC Convertible, weighing 12 pounds. Finally, in 1994, IBM introduced the IBM ThinkPad 775CD, the first notebook with an integrated CD-ROM.

The first Apple computer

Steve Wozniak designed the first Apple known as the Apple I computer in 1976.

The first PC clone

The Compaq Portable is considered to be the first PC clone and was release in March 1983 by Compaq. The Compaq Portable was 100% compatible with IBM computers and was capable of running any software developed for IBM computers.

• See the below other major computer companies first for other IBM compatible computers

The first multimedia computer

In 1992, Tandy Radio Shack becomes one of the first companies to release a computer based on the MPC standard with its introduction of the M2500 XL/2 and M4020 SX computers.

Other major computer company firsts

Below is a listing of some of the major computers companies first computers.

Compaq - In March 1983, Compaq released its first computer and the first 100% IBM compatible computer the "Compaq Portable."
Dell - In 1985, Dell introduced its first computer, the "Turbo PC."
Hewlett Packard - In 1966, Hewlett Packard released its first general computer, the "HP-2115."
NEC - In 1958, NEC builds its first computer the "NEAC 1101."
Toshiba - In 1954, Toshiba introduces its first computer, the "TAC" digital computer.

Virus computers

A computer virus is a type of malware that, when executed, replicates by inserting copies of itself (possibly modified) into other computer programs, data files, or the boot sector of the hard drive; when this replication succeeds, the affected areas are then said to be "infected". Viruses often perform some type of harmful activity on infected hosts, such as stealing hard disk space or CPU time, accessing private information, corrupting data, displaying political or humorous messages on the user's screen, spamming their contacts, or logging their keystrokes. However, not all viruses carry a destructive payload or attempt to hide themselves -- the defining characteristic of viruses is that they are self-replicating computer programs which install themselves without the user's consent.

Virus writers use social engineering and exploit detailed knowledge ofsecurity vulnerabilities to gain access to their hosts' computing resources. The vast majority of viruses (over 99%) target systems running Microsoft Windows, employing a variety of mechanisms to infect new hosts, and often using complex anti-detection/stealth strategies to evade antivirus software. Motives for creating viruses can include seeking profit, desire to send a political message, personal amusement, to demonstrate that a vulnerability exists in software, for sabotage and denial of service, or simply because they wish to explore artificial life and evolutionary algorithms.

Computer viruses currently cause billions of dollars worth of economic damage each year, due to causing systems failure, wasting computer resources, corrupting data, increasing maintenance costs, etc. In response, free, open-source anti-virus tools have been developed, and a multi-billion dollar industry of anti-virus software vendors has cropped up, selling virus protection to Windows users. Unfortunately, no currently existing anti-virus software is able to catch all computer viruses (especially new ones); computer security researchers are actively searching for new ways to enable antivirus solutions to more effectively detect emerging viruses, before they have already become widely distributed.

How to remove virus computers???

Harry Potter

Harry Potter is a series of seven fantasy novels written by the British author J. K. Rowling. The books chronicle the adventures of a wizard, Harry Potter, and his friends Ronald Weasley and Hermione Granger, all of whom are students at Hogwarts School of Witchcraft and Wizardry. The main story arc concerns Harry's quest to overcome the Dark wizard Lord Voldemort, whose aims are to become immortal, conquer the wizarding world, subjugate non-magical people, and destroy all those who stand in his way, especially Harry Potter.

Since the release of the first novel, Harry Potter and the Philosopher's Stone, on 30 June 1997, the books have gained immense popularity, critical acclaim and commercial success worldwide. The series has also had some share of criticism, including concern for the increasingly dark tone. As of June 2011, the book series has sold about 450 million copies, making it the best-selling book series in history, and has been translated into 67 languages. The last four books consecutively set records as the fastest-selling books in history.

A series of many genres, including fantasy and coming of age (with elements of mystery, thriller, adventure, and romance), it has many cultural meanings and references. According to Rowling, the main theme is death. There are also many other themes in the series, such as prejudice and corruption.

The initial major publishers of the books were Bloomsbury in the United Kingdom and Scholastic Press in the United States. The books have since been published by many publishers worldwide. The books, with the seventh book split into two parts, have been made into an eight-part film series by Warner Bros. Pictures, the highest-grossing film series of all time. The series also originated much tie-in merchandise, making the Harry Potter brand worth in excess of $15 billion. Also, due to the success of the books and films, Harry Potter has been used for a theme park, The Wizarding World of Harry Potter in Universal Parks & Resorts's Islands of Adventure.

Important Actors and Actresses of Harry Potter

Daniel Raddiffe
Harry Potter

Emma Watson
Hermione Granger

Ralph Fiennes
Lord Vodemort

Robert Pattinson
Cedric Diggory

Tom Felton
Draco Malfoy

Ropert Grint
Ronald Weasley

Robbie Coltrane
Rubeus Hagrid

Jason Isaacs
Lucius Malfoy