2. This is the university of Pennsylyania ,Where first
Computer was invented.
3. This is IBM Company which has made first computer
operating system in 1985. IBM is a computer Hardware
Company
4. This is a Micro Computer. These computers are small in size and cost less. These
computers are also called as Personal Computers. These Computers are mainly used
in homes , schools , banks etc. The name of first micro computer was Altair and was
released in 1973.
5. This is a mini computer. These computers are bigger in size
than of Micro Computers. These computers are used in
banks , universities etc. The first mini computer was
invented by Kenneth Olsen in November 1960.The name of
first mini computer was PDP-1 and costs RS.1,20,000.
6. These are mainframe computers and are very powerful. They are
big in size with a large memory and high speed. Mainframe
computers are very expensive. The Mainframe computer was
invented in 1946 and was designed by J . Presper Eckert and John
Mauchly. The name of First Mainframe Computer was Harvard
Mark I. and weighted 5 tons.
7. These are super computers and most powerful computers with a
huge processing speed. These computers are used for weather
forecasting , space research , satellite control etc. The name of first
computer was CDC 6600. Super Computer was designed , invented
and made by Seymour Cray. $.200 Million are used to build Super
Computer
