IBM 701 - definizione. Che cos'è IBM 701
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Cosa (chi) è IBM 701 - definizione

MAINFRAME COMPUTER BY IBM
IBM Defense Calculator; Defense Calculator
  • [[Vacuum tube]] logic module from a 700 series IBM computer.
  • IBM 701 processor frame, showing 1071 of the vacuum tubes

IBM 701         
<computer> ("Defense Calculator") The first of the {IBM 700 series} of computers. The IBM 701 was annouced internally on 1952-04-29 as "the most advanced, most flexible high-speed computer in the world". Known as the Defense Calculator while in development at {IBM Poughkeepsie Laboratory}, it went public on 1953-04-07 as the "IBM 701 Electronic Data Processing Machines" (plural because it consisted of eleven connected units). The 701 was the first IBM large-scale electronic computer manufactured in quantity and their first commercial scientific computer. It was the first IBM machine in which programs were stored in an internal, addressable, electronic memory. It was developed and produced in less than two years from "first pencil on paper" to installation. It was key to IBM's transition from punched card machines to electronic computers. It consisted of four magnetic tape drives, a magnetic drum memory unit, a cathode-ray tube storage unit, an L-shaped arithmetic and control unit with an operator's panel, a punched card {reader, a printer, a card punch and three power units. It performed more than 16,000 additions or subtractions per second, read 12,500 digits a second from tape, print 180 letters or numbers a second and output 400 digits a second from punched-cards. The IBM 701 ran the following languages and systems: BACAIC, BAP, DOUGLAS, DUAL-607, FLOP, GEPURS, JCS-13, KOMPILER, LT-2, PACT I, QUEASY, QUICK, SEESAW, SHACO, SO 2, Speedcoding, SPEEDEX. {ibm/history/exhibits/701/701_intro.html">IBM History (http://www-03.ibm.com/ibm/history/exhibits/701/701_intro.html)}. (2005-06-20)
Defense Calculator         
701 BC         
YEAR
701 BCE
The year 701 BC was a year of the pre-Julian Roman calendar. In the Roman Empire, it was known as year 53 Ab urbe condita .

Wikipedia

IBM 701

The IBM 701 Electronic Data Processing Machine, known as the Defense Calculator while in development, was IBM’s first commercial scientific computer and its first series production mainframe computer, which was announced to the public on May 21, 1952. It was invented and developed by Jerrier Haddad and Nathaniel Rochester based on the IAS machine at Princeton.

The IBM 701 was the first computer in the IBM 700/7000 series, which were IBM’s high-end computers until the arrival of the IBM System/360 in 1964.

The business-oriented sibling of the 701 was the IBM 702 and a lower-cost general-purpose sibling was the IBM 650, which gained fame as the first mass-produced computer.