In the first 45 years, numerous advances have been made in the subject of computer science. Not just numerous, but very notable as well. From the abacus to the laptop today, computers have sure come a long way. First generation computers were usually called ENIAC. They used vacuum tubes. These types of computers became too hot to use for a long period of time. They were also very big. In 1959-1964, the second generation of computers …showed first 75 words of 517 total…

…showed last 75 words of 517 total…also many other operating systems like Windows 98, which has something called GUI. It stands for graphical user interface. These are very easy to use since you can see pictures of what you are doing. Operating systems are used to make computers work. Computers are not so simple anymore, like the abacus. They are now powerful machines which are used for many different purposes. Computers are still changing and there are new programs coming out everyday.