ICT 1301

The ICT 1301 and its smaller derivative ICT 1300 were early business computers from International Computers and Tabulators. Typical of mid-sized machines of the era they used core memory, drum storage and punched cards, but they were unusual in that they were based on decimal logic instead of binary.

The 1301 was designed by an ICT and GEC joint subsidiary, Computer Developments Limited (CDL) at GEC's Coventry site.

The 1301 was the main machine in the line. Its main memory came in increments of 400 words of 48 bits (12 decimal digits) plus two parity bits. The maximum size was 2,000 words. It was the first ICT machine to use core memory.

Backing store was magnetic drum and optionally one inch, half inch or quarter inch wide magnetic tape. Input was from 80 column punched cards and optionally 160 column punched cards and punched paper tape. Output was to 80 column punched cards, line printer, and optionally to punched paper tape.

The machine ran at a clock speed of 1 MHz and its arithmetic logic unit (ALU) operated on data in a serial-parallel fashion—the 48-bit words were processed sequentially four bits at a time. A simple addition took 21 clock cycles; hardware multiplication averaged 170 clock cycles per digit; and division was performed in software.

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ICT 1900 series

ICT 1900 was the name given to a series of mainframe computers released by International Computers and Tabulators (ICT) and later International Computers Limited (ICL) during the 1960s and '70s. The 1900 series was notable for being one of the few non-American competitors to the IBM System/360, enjoying significant success in the European and Commonwealth markets.

Creation of the ICT 1900 series

In early 1963 ICT was in negotiations to buy the computer business of Ferranti. In order to sweeten the deal Ferranti demonstrated to ICT the Ferranti-Packard 6000 (FP6000) machine, developed by its Canadian subsidiary Ferranti-Packard.

The FP6000 was an advanced design, notably including hardware support for multiprogramming. ICT considered using the FP6000 as their medium-sized processor in the 1965–1968 timeframe, replacing the ICT 1302. Another plan being considered was to license a new range of machines being developed by RCA, probably compatible with the expected IBM 8000.

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ICT

ICT may refer to:

Places

  • Indochina Time, a time zone
  • Islamabad Capital Territory, the area of Islamabad which consists only the Capital Territory of Pakistan
  • Wichita Dwight D. Eisenhower National Airport, an airport in Wichita, Kansas (IATA Airport Code ICT)

    • Government agencies, organizations and politics

  • Costa Rican Tourism Board (Instituto Costarricense de Turismo), the government agency responsible for promoting sustainable tourism in Costa Rica
  • International Campaign for Tibet, a non-profit advocacy group
  • International Institute for Counter-Terrorism, an Israeli think-tank and policy research institute
  • Internationalist Communist Tendency, the new name of the left communist group formerly known as the International Bureau for the Revolutionary Party

    • Science and technology

  • Image Constraint Token, a flag that causes downsampling of high-definition video content
  • In-circuit test, an electronics testing methodology, a special case of white box testing
  • Information and communications technology
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    This page contains text from Wikipedia, the Free Encyclopedia - https://wn.com/ICT

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    by: Echt

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