History Of Computer

Today many people have computers .But most of the people who use computers don't know about the history of computer. Now I'm going to tell you about it. I think it's Very Valuable for you

3000BC -  The Abacus

1642 - The first mechanical Digital Calculator

1822 - Charles Babbage (father of computer) invented Difference Engine

1880 - Dr.Herman Hollerith developed the Punched Card

1939 - Dr.John Vincent produced the first Electronic Computer

1944 - Aitken built MARK

1947 - Mauchy and Eckert built HENIAC 

1949 - Maurice , Eckert and Von Neumaun built EDVAC                                                                             

(Electronic Discrete Variable Automatic Computer) 

1950 - Turing built ACE ( Automatic Computing Engine )

1951 - Mauchy and Eckert built UNIVAC ( Universal Automatic Computer )

1960 - Gene Amdahl designed IBM

1963 - Digital equipment corporation produced PDP-1

 ( Program Data Processor ) which was the first mini Computer.

1975 - H.Edward Robert's first Micro Computer

1976 - CRAY - 1 Super Computer

1977 - Stephen Wozniak and Steven Jobs built first Apple Micro Computer

1980 - Lower cost Personal Computer  ( PC )