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Computer History

General history of computers

MachineInformation
Abacus Used in ancient times to help calculate. used beads.
Napiers Bones Early 1600s John Napier; divison, multiplication
Adding Machine 1642: first mechanical adding machine, Blaige Pascal. (Add/Subtract)
Division machine late 1600s, Baron Gottfried Wilhelm von Leibnitz. (divide/multiply)
Loom with punch cards early 1800s Joseph Marie Jaquard; weaving looms that used holes punched in cards to control the pattern, he was not trying to invent computer, his ideas helped others.
"difference engine" 1832; Charles Babbage "Father of Modern Computing" first general-purpose mechanical digital computer.
Analytical engine (also C. Babbage) could be programmed and had memory. too far ahead of his time; later inventors used his ideas
First programs 1853;Ada Byron (countess of Lovelace) supported Babbage. She suggested he use punchcards in looms. Also wrote programs for analytical engine.
Cenus Machine 1890; Herman Hollerith- used punch cards to count information collected in 1890 census. Started company which later became IBM
First Computer 1944; Mark I; IBM electric adding machine. 55 feet long, 500 miles of wire
ENIAC 1946; Vaccum tubes
Personal Computers 1970- tiny chips bring down size and cost of computers. 100 million adds per second. Apple
Information revolution 1990s connected, internet
First Generation Vaccum Tubes
Second Generation Transistors
Third Generation integrated circuts
Fourth Generation Silicon Chip
Created by: Wood1988
Popular Computers sets

 

 



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