| A | B |
|---|
| Charles Babbage | Inventor of a steam driven Mechanical Analytical Engine in England (machine never finished). (1830s) |
| Ada Byron King (Lady Lovelace) | Worked with Babbage in England (1830s) - Considered to be 1st computer programmer |
| Herman Hollerith | Invented the punch card method of tabulating data (1880s). His company eventually becme IBM. |
| Howard Aiken | Build an electro-mechanical computer (1940) called the Harvard Mark I. |
| Alan Turing & Tommy Flowers | Builder of Collosus - an electro-mechanical "code cracking" computer in England (1938). |
| J. Presper Eckert & John Mauchley | Builders of ENIAC - worlds 1st fully electronic computer (Philadelphia, PA, USA 1946) |
| William Shockley, John Bardeen, Walter Bratain | Invented the transistor at Bell Research Labs, USA, (1951 - patent date) |
| Jack Kilby & Robert Noyce | Separately and independently, both invented the Integrated Circuit (1959 - 1960) |
| Tedd Hoff, Stanley Mazor, Federico Faggin | Inventors of the INTEL 4004 (1st microprocessor) (1975) |
| Daniel Hillis | Created the Connection Machine, one of the 1st parallel processing computers (1989) |
| Vinton Cerf & Robert Kahn | Fathers of the Internet for developing TCP/IP in 1975 which supported ARPA net in 1983 and eventually the Internet (1990s) |
| Grace Murray Hopper | 1st woman to be Admiral in US Navy - work with computers for 50+ years and developed 1st Compiler (1952) |
