Z4 (computer)
kW | |
Mass | Ca. 1,000 kg (2,200 lb) |
---|---|
Predecessor | Z3 |
Successor | Z5 |
The Z4 was arguably the world's first commercial
Construction
The Z4 was very similar to the
In 1944, Zuse was working on the Z4 with around two dozen people,[11] including Wilfried de Beauclair. Some engineers who worked at the telecommunications facility of the OKW also worked for Zuse as a secondary occupation. Also in 1944 Zuse transformed his company to the Zuse KG (Kommanditgesellschaft, i.e. a limited partnership) and planned to manufacture 300 computers.[12] This way he could also request additional staff and scientists as a contractor in the Emergency Fighter Program.[12] Zuse's company also cooperated with Alwin Walther's Institute for Applied Mathematics at the Technical University of Darmstadt.[13]
To prevent it from falling into the hands of the Soviets, the Z4 was evacuated from Berlin in February 1945 and transported to Göttingen.[11][14] The Z4 was completed in Göttingen in a facility of the Aerodynamische Versuchsanstalt (AVA, Aerodynamic Research Institute), which was headed by Albert Betz. But when it was presented to scientists of the AVA the roar of the approaching front could already be heard,[2] so the computer was transported with a truck of the Wehrmacht to Hinterstein in Bad Hindelang in southern Bavaria, where Konrad Zuse met Wernher von Braun.[2][15]
By 1947 it was possible for constants to be entered by the punched tape.[10]
Use after World War II
In 1949, the Swiss mathematician Eduard Stiefel, after coming back from a stay in the US where he inspected American computers, visited Zuse and the Z4. When he formulated a differential equation as a test, Zuse immediately programmed the Z4 to solve it, Stiefel decided to acquire the computer for his newly founded Institute for Applied Mathematics at the ETH Zurich.[16] It was delivered to ETH Zurich in 1950.[17][18]
At least Zürich has an interesting nightlife with the rattling of the Z4, even if it is only modest.
—Konrad Zuse
In 1954, Wolfgang Haack tried to obtain the Z4 for the Technical University of Berlin,[12] but it was instead transferred to the Institut Franco-Allemand des Recherches de St. Louis (ISL, Franco-German Institute of Research) in France, where it was in use until 1959, under its technical head Hubert Schardin. Today, the Z4 is on display in the Deutsches Museum in Munich. The Z4 inspired the ETH to build its own computer (mainly by Ambros Speiser and Eduard Stiefel), which was called ERMETH, an acronym for German: Elektronische Rechenmaschine ETH ("Electronic Computing Machine ETH").
In 1950/1951, the Z4 was the only working digital computer in Central Europe, and the second digital computer in the world to be sold or loaned,[1]: 981 beating the Ferranti Mark 1 by five months and the UNIVAC I by ten months, but in turn being beaten by the BINAC (although that never worked at the customer's site[19]). Other computers, all numbered with a leading Z, were built by Zuse and his company. Notable are the Z11, which was sold to the optics industry and to universities, and the Z22.
In 1955 the Z4 was sold to the French-German Research Institute of Saint-Louis (Institut franco-allemand de recherches de Saint-Louis) in Saint-Louis, close to Basel, and in 1960 transferred to the German Museum in Munich.[20]
The Z4 was used for calculations for work on the Grande Dixence Dam.
Specifications
- Frequency: (about) 40 Hz
- Average calculation speed: 400 ms for an addition, 3 seconds for a multiplication. Approximately 1000 floating point arithmetic operations on average an hour.
- Programming: holes in 35 mm film stock, punched on a programming machine
- Input: Decimal floating point numbers, punch tape
- Output: Decimal floating point numbers, punch tape or Mercedes typewriter
- Word length: 32 bits floating point
- Elements: (about) 2,500 relays, 21 step-wise relays
- Memory: Mechanical memory from the Z1 and Z2[7] (64 words, 32 bit)[21]
- Power consumption: (about) 4 kW
See also
References
- ^ ISBN 978-3-03040973-9. (NB. This is the English translation of the German work "Meilensteine der Rechentechnik" in two volumes.)
- ^ a b c Schillo, Michael [at Wikidata] (2001). "Zuse" (PDF) (Lecture) (in German). Archived (PDF) from the original on 2021-03-08. Retrieved 2010-06-21. (25 pages)
- ^ Zuse, Horst. "The Life and Work of Konrad Zuse". Part 6: part6a, part6b. Archived from the original on 2008-06-16. Retrieved 2010-05-15.
- ISBN 978-1-44389631-3.
- ISBN 978-3-31922156-4.
- from the original on 2022-04-07. Retrieved 2008-07-26.
- ^ ISBN 978-3-54056453-9. (NB. This is a translation of the original title in German Der Computer - Mein Lebenswerk.)
- S2CID 1086397.
- ISBN 978-0-262-18197-6.
- ^ ISSN 0025-5718.
- ^ ISBN 978-3-540-85789-1.
- ^ ISBN 3-540-00217-0.
- S2CID 15020276.
- )
- ^ Campbell-Kelly, Martin (1995-12-21). "Obituary: Konrad Zuse". The Independent. Retrieved 2011-02-04.
- ^ Lippe, Wolfram M. (2010-04-13) [2007]. "Kapitel 14 - Die ersten programmierbaren Rechner" (PDF) (in German). Archived from the original (PDF) on 2011-07-19. Retrieved 2010-06-21.
- ^ "Zuse Computer Model IV, at Zurich, Switzerland". Digital Computer Newsletter. 3 (1): 5. April 1951.
- .
- S2CID 10189359.
The BINAC
- ^ Deutsches Museum, Die Z3 und Z4 von Konrad Zuse, Website of the Deutsches Museum
- ^ A survey of automatic digital computers. Office of Naval Research, Dept. of the Navy. 1953. p. 97.
Further reading
- ISBN 978-3-64296242-4. Retrieved 2022-07-02.
- Addison-Wesley Longman Publishing Co., Inc.
- LaForest, Charles Eric (April 2007). "2.1 Lukasiewicz and the First Generation: 2.1.2 Germany: Konrad Zuse (1910–1995); 2.2 The First Generation of Stack Computers: 2.2.1 Zuse Z4". Second-Generation Stack Computer Architecture (PDF) (thesis). Waterloo, Canada: University of Waterloo. pp. 8, 11. Archived (PDF) from the original on 2022-01-20. Retrieved 2022-07-02. (178 pages)
- Bruderer, Herbert (2012). Konrad Zuse und die Schweiz. Wer hat den Computer erfunden? Charles Babbage, Alan Turing und John von Neumann (in German). Vol. XXVI. Munich, Germany: Oldenbourg Verlag. ISBN 978-3-486-71366-4. Archived from the originalon 2012-02-03.
- Bruderer, Herbert (2020-09-21). "Discovery: User Manual of the Oldest Surviving Computer in the World". BLOG@CACM. Association for Computing Machinery. Archived from the original on 2022-07-02. Retrieved 2022-07-02.
- doi:10.7891/e-manuscripta-98601. Exemplar Nr. 19, Hs 1517:1. Archived from the original on 2022-07-02. Retrieved 2022-07-02. [1](1+1+16 pages)
External links
- zuse.de homepage from Horst Zuse (son of Konrad Zuse) with much information about the Zuse computers
- zuse.de {English} English homepage from Horst Zuse (son of Konrad Zuse)
- Pictures of the Z4 at the ETH Zürich (with German text)
- "Textual and pictorial description of the Z4: history, instruction set and hardware features". Konrad Zuse's Computer. Technical University of Berlin. Archived from the original on 2008-09-14. Retrieved 2008-07-26.
- Zuse, Horst. "The Z4 Computer and the Zuse Apparatebau in Berlin (1940-1945)". The Life and Work of Konrad Zuse. Archived from the original on 2008-06-01. Retrieved 2008-07-26.