ICT 1900 was a family of mainframe computers released by International Computers and Tabulators (ICT) and later International Computers Limited (ICL) during the 1960s and 1970s. 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 British ...

The original series built using this technology comprised the 1901, 1902, 1903, 1904 and 1906 for commercial applications, spanning a wide performance range, and the 1905, 1907 and 1909 for scientific and engineering work.

Extended Mathematical Units: To provide on the 1901, 1902 and 1903 the high speed mathematical computing facilities more usually associated with the larger central processors, I.C.T. has developed special units that can be fitted and/or floating point arithmetic circuits and replace the slower extra-code facilities provided by the Executives ...

During the 10 years of market life of the 1900 Range, the specification and measurement of processor performance, initially expressed in individual instruction times, was increasingly specified by standardised “work loads”, instruction mixes that could be coded and measured on all models in the range and on competing systems (with different orde...

ICT (International Computers and Tabulators) on 28 September 1964 announced the 1900 Range of systems, giving great emphasis on program compatibility and portability between all models in the 1900 range (present and future) and modularity via the ICT Standard Interface (“Each 1900 system will grow with the customer’s needs by replacing individua...

ICL System 4/72; ICL System 4/75; ICL Series 39; ICL Series 39 Level 30; ICL Series 39 Level 50; ICL Series 39 Level 60; ICL Series 39 Level 80; Elliott 503; Elliott 803; ICT 1301; ICT 1900; ICT 1900 series; ICT 1901; ICL 1901A; ICL 1901S; ICL 1901T; ICT 1902; ICL 1902A; ICL 1902S; ICL 1902T; ICT 1903; ICL 1903A; ICL 1903S; ICL 1903T; ICT 1904 ...

ICL - VME 2900 - Implementing a Transaction Processing System (TPMS 320) ICL 1900 Basic Peripherals. ICL 1900 Series 1900 Driver. ICL 1900 Series Analysis of Massive Survey Files. ICL 1900 Series Central Processors. ICL 1900 Series COBOL. ICL 1900 Series COBOL Compilers.

Faraday Computers gets ICL 1902T Published in: Electronics and Power ( Volume: 21 , Issue: 19 , 13 November 1975) Article #: Page(s): 1085 Date of Publication: 13 November 1975 . ISSN Information: Print ISSN: 0013-5127 INSPEC Accession Number: Persistent Link: https ...

Many users would now proudly wear the vintage badge produced some years ago by ICL sales promotion, which stated GEORGE 3 FOR ME. Mingling among the merry at Beaumont, Strauss recalled how George was named. Seven design options were being considered, identified by …

In 1973 and 1974 the T models were introduced (1901T, 1902T, 1903T) in the lower part of the range, while the 2900 Range was under development to replace the upper part of the range. The 2900 started to replace the 1900 top down from 1974.