ITE 1158/26/13 500 B.C.: Abacus 1994 Surfing the web Computer becomes more readily available because price drops Tally stick to record memories and important events abacus for subtraction and addition Howard Aiken (1900-1973) Built the ASCC, or Harvard Mark I, a calculator Ph.D. in Physics at Harvard Upgraded Mark I to Marks II (1947), III (1949), and IV (1952) Created Master’s program for computer sciences at Harvard Harvard Mark I Multiplication: 6 seconds Division: 15 seconds Charles Babbage Father of the computer Originated concept of programmable computer Ada Lovelace (1815-1852) Founder of scientific computers World’s first computer programmer Thomas Watson, Sr. IBM leader John Vincent Atanoff 1942: Atanasoff Berry Computer (ABC) Military computer Binary computer Arithmetic Switching 1943: Colossus British computer Code breaker Grace Hopper Completion of nomadic first compiler Early member of AMC Coined term for “debugging” One of the first programmers of Mark I Developed Cobalt 1945: ENIAC Ballistic reports Fastest computer of its time Multi-use computer 1951: UNIVAC First general-purpose computer Atlas Transistor Pioneered virtual memory, operating system, etc.ITE 1158/26/13 1971: first e-mail was sent Integrated circuits Speed Size (small) Cheaper/mass production More reliable Efficiency (less power and heat) IBM System 360 6 compatible computers 40 system networks 1966: HP-2115 Computer
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