A Decade in HistoryThe Invention of The Computer. By: Kylene Cashman.
1936-Konrad Zuse z1 computer. • The KonradZuse Z1 computer was the first binary computer. • It was also the first freely programmable computer. • It was a mechanical calculator. • It had all the basic ingredients of modern machines. • The Z1 used the binary system and today's standard separation of storage and control. • It was used to explore several It was used to explore several innovative technologies in calculator evolution, including: • high-capacity memory • modules regulating on the yes/no principle.
1942-ABC Computer. • The ABC computer was built at Iowa State University between 1939 and 1942. • It was the first electronic computer. • The Atanasoff computer was relatively the size of a bulky computer desk. • It was made of approximately 270 vacuum tubes. • The arithmetic unit was made up of 210 tubes, 30 tubes controlled the card reader, and the rest of the tubes helped maintain charges in the condensers. • Even though it was a revolutionary achievement, it had a wide variety of limitations. • It was very slow, and also required long hours of maintenance. • The computer was dismantled in 1948.
1944-HARVARD MARK 1 Computer. • It was invented and designed by Howard Aiken and Grace Hopper at Harvard University. • It was 55 feet long and 8 feet high. • The device was 5 tons, and contained approximately 760,000 pieces. • It was used for the US navy for ballistic and gunnery calculations. • The Harvard I could carry out certain functions such as addition, subtraction, multiplication, and division. • The data was stored and counted using 3000 decimal storage wheels, 1400 rotary dial switches, and 500 miles of wire. • All the outputs were displayed on a typewriter. • The Harvard Mark I computer was slow comparing to todays standards, taking 3-5 seconds for a multiplication operation.
1946-ENIAC 1 Computer. • The ENIAC 1 Computer was created by John Presper Eckert and John Mauchly. • It was used for computing artillery-firing tables, the setting for different weapons varied between target accuracy. • The ENIAC1 computer was composed of 17,468 vacuum tubes, along with 70,000 resistors, 10,000 capacitors, 1,500 relays, 6,000 manual switches and 5 million soldered joints. • It weighed 30 tons and covered 1,800 square feet of space. It also consumed 160 kilowatts of electricity. • There is even an urban myth that states that the ENIAC 1 computer would cause the city of Philadelphia to have rolling blackouts. • In one second, the ENIAC could perform 5,000 additions, 357 multiplications and 38 divisions. It was one thousand times faster than any other calculating machine to date. • The use of thousands of vacuum tubes instead of switches made the machine more intense in speed. But this also caused the machine to not be quick to program. • The machine required long hours of matinence to operate. • At 11:45 p.m., October 2, 1955, with the power finally shut off, and the ENIAC was retired.
KonradZuse and ABC Computer. http://inventors.about.com/library/weekly/aa050298.htm KonradZuse Z1 Computer. http://www.computermuseum.li/Testpage/ABC-Computer-1940.htmABC Computer.
ENIAC 1 Computer. http://www.computersciencelab.com/ComputerHistory/HistoryPt4.htm
Harvard Mark 1 Computer- http://www.solprevajanje.com/images/harvard-mark-1-action.jpg