Difference between revisions of "NORD-20"

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The '''NORD-20''' is almost identical with the [[NORD-2B]]. Compared to later models of NORD-2B the NORD-20 is electrically the same but the CPU is contained on six boards instead of ten.<ref>[https://drive.google.com/open?id=0B2Sc5Qa5d_tLM0hmVUxHekcyUUU ND-Nytt #7, May 1973] page 12.</ref> It is smaller physically than the NORD-10<ref name="picture">[http://digitaltmuseum.no/021015466860 Picture in the collections of Oslo Museum]</ref>. The NORD-20 was released before the NORD-10.
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The '''NORD-20''' is almost identical with the [[NORD-2B]]. Compared to later models of NORD-2B the NORD-20 is electrically the same but the CPU is contained on six boards instead of ten.<ref>[https://drive.google.com/open?id=0B2Sc5Qa5d_tLM0hmVUxHekcyUUU ND-Nytt #7, May 1973] page 20-21.</ref> It is smaller physically than the NORD-10<ref name="picture">[http://digitaltmuseum.no/021015466860 Picture in the collections of Oslo Museum]</ref>. The NORD-20 was released before the NORD-10.
 
[[Image:NORD-20-office.jpg |300px | thumb | NORD-20 in an office settings with [[ASR-33]] terminal, Centronics printer, [[Facit 4070]] punch and a card reader]]
 
[[Image:NORD-20-office.jpg |300px | thumb | NORD-20 in an office settings with [[ASR-33]] terminal, Centronics printer, [[Facit 4070]] punch and a card reader]]
  

Revision as of 19:51, 18 April 2019

The NORD-20 is almost identical with the NORD-2B. Compared to later models of NORD-2B the NORD-20 is electrically the same but the CPU is contained on six boards instead of ten.[1] It is smaller physically than the NORD-10[2]. The NORD-20 was released before the NORD-10.

NORD-20 in an office settings with ASR-33 terminal, Centronics printer, Facit 4070 punch and a card reader

First installed system in January 1972. In August 1974 a total of 43 systems had been installed[3].

Comparision with NORD-10

The following comparision was made in August 1973.[4]

NORD-10 NORD-20
Cycle time 0.4-0.8 us 1.0 us
Word length 16 16
Memory size 8-256 kWord 4-16 kWord
Price basic system 200.000 NOK 78.000 NOK
Price for typical system 2.000.000 NOK 500.000 NOK

Remaining machines

This is a first shot at a list of remaining machines. Also machines that is known to be lost will be listed to make it easier to locate remaining ones. We don't have any production numbers yet.

  • NORD-20 with unknown serial is in the collection of Trøim, in Telemuseums storage in Fetsund (2016 inventory).

References

  1. ND-Nytt #7, May 1973 page 20-21.
  2. Picture in the collections of Oslo Museum
  3. Computers and People, September 1974
  4. Computer manufacturing survey from 1973