It was January 1975 when the first personal computer Altair 8800 was invented by a former Georgian Air Force officer, Ed Roberts. His motivation was an interest in having a personal computer to play with, as computers were scarce and hard to find back then. The Altair 8800 was invented in Albuquerque, New Mexico, where Ed Roberts ran his calculator business called MITS. Ed Robert's Altair was believed to have been the spark that started the fire and gave the personal computer the ability to be seen on everyone's desk. Ed Roberts used a microprocessor (8080) to launch Altair, a chip he got from Intel, the chip maker, chips they considered only useful for calculators and traffic lights, but Ed Roberts saw more. The microprocessor was a technological breakthrough that made the personal computer possible, without it the first personal computer would never have existed. Altair did basic calculations, but was a pain to use. Laboriously typing data and instructions by pressing switches was all the Altair could do. So, those who had an interest in technology decided to form a club called the "Homebrew Computer Club" at Stanford University in Silicon Valley, mainly to talk about computers and how they could improve it. For Ed Roberts, building a more innovative personal computer was not the path he chose to continue, rather he sold his company MITS and earned his doctorate in his hometown of Georgia. At the same time, hobbyists who shared a common interest in computers were trying to figure out what was the best thing after Altair, high school friends and Microsoft founder Paul Allen and Bill Gates, who were also fascinated by the technology, wrote Basics , the first personal... middle of paper... ...as before. The next step after developing a working PC is to make it compatible with your computer. The graphical user interface (GUI) is the perfect tool to make your PC easier to use; using images, rather than words. Xerox was the original creator of the GUI, having created the Xerox Alto in 1973, where the graphical user interface and laser printer originated. The year was 1971 when Xerox decided to found the research center in Palo Alto, with the aim of dominating the paperless office of the future. Bob Taylor, former head of the computer lab at Xerox Parc, Larry Tesler and Adele Goldberg, former researchers at Xerox Parc, and finally John Warnock, co-founder of Adobe System, also a member of and Windows happen. They are the reason why using your computer is easy to use and they also made your printer print exactly how you want it to look.