Z25 (computer)

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Z25
Developer
Zuse KG
Release date1963; 61 years ago (1963)
Units sold110 in Germany, 10 in foreign countries (2 in Moscow)
CPU@ 180 kHz
StorageDrum memory
Removable storageMagnetic tape memory, punched tape and punched cards
DisplayTeleprinter
RelatedZ22, Z26
Ferrite-core memory included in the Z22, Z23 and Z25

The Zuse Z25 was a program-controlled electronic computer using

magnetic core memory was 16383 words. The programmable program memory had a maximum size of 4096 words.[2]

For mass storage there was a drum memory available as well as a magnetic tape memory. The magnetic drum had a storage capacity of 17664 Z25 words. The transmission speed was 6900 words per second. The magnetic tape memory had a capacity of 1 million Z25 words and a transmission speed of approximately 33000 Z25 words per second.[2][3][4] In- and output was through punched tape and punched cards; it was also possible to print to a teleprinter.

The computer could carry out approximately 7100 arithmetic operations per second at a clock rate of 180 kHz. Several Z25s could be connected in a network. The Z25 could be used for the control and data acquisition of external devices through a program-interrupt system with up to 32 channels.[2]

References

  1. ISBN 978-3-540-56453-9
    .
  2. ^ a b c Zuse KG: Einführung in die Arbeitsweise der Zentraleinheit des Datenverarbeitungssytems Zuse Z 25 (Ausgabe April 1963).
  3. ^ Zuse KG: Zuse Z 25 Standard-Grundprogramm Programmieranleitung (Ausgabe Dezember 1963).
  4. ^ Zuse Forum 10-1965, p. 34.

External links

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