The chronological order in the development of computer is summarized below:
500 BC: The Abacus machine was used in Egypt. But the history dates back to china around 200 BC. It is know in China as Sounpan; and called Sovoban in Japan.
1614: An English man called John Napier developed a computer called Napier’s bone.
1620 — William Ought Red discovered slide rule.
1642 — A Frenchman called Blaise Pascal invented Pascal’s arithmetic machine.
1671— A German born Got-fried Wilhelm von Leibniz invented a Leibniz calculating machine.
1822 — An English mathematician called Charles Babbage invented a Mechanical computer.
1890 — Herman Hollerith developed a punched card called the Hollerith’s machine
1900 — Valdermar Paulson invented a recording device.
1930— George Stibitz of Bell laboratories developed the complex numerical calculator
1937— Howard Aiken developed the Harvard Mark.
1943 — Alan Turin developed a special purpose electronic machine called the Colossus.
1946 — J Presper Eckert and John Mauchly developed the Electronic Numeric integrator and calculator (ENIAC)
1949 — MN WILKINS invented the Electronic Delay Storage Automatic Computer WDSAC)
1950 – University of Pennsylvania developed the Electronic discrete Variable Automatic Computer (EDVAC).
1951 — National Physics laboratory invented the Automatic Computer Engine (ACE).
1948 — William Shockley and team invented the Transistor based Computer. Also the international Business Machine (IBM) developed the integrated circuit computer called the IBM 360.
1972 — Intel corporation manufactured the microcomputer.