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IBM 701
CHF 43.35
Auf Lager
SKU
KJ9AJUKFSUB
1 Verfügbar 
Geliefert zwischen Do., 13.11.2025 und Fr., 14.11.2025
Details
High Quality Content by WIKIPEDIA articles! The IBM 701, known as the Defense Calculator while in development, was announced to the public on April 29, 1952, and was IBM's first commercial scientific computer. Its business computer siblings were the IBM 702 and IBM 650. The system used electrostatic storage, consisting of 72 Williams tubes with a capacity of 1024 bits each, giving a total memory of 2048 words of 36 bits each. Each of the 72 Williams tubes was three inches in diameter. Memory could be expanded to a maximum of 4096 words of 36 bits by the addition of a second set of 72 Williams tubes or by replacing the entire memory with magnetic core memory. The Williams tube memory and later core memory each had a memory cycle time of 12 microseconds. The Williams tube memory required periodic refreshing, mandating the insertion of refresh cycles into the 701s timing. An addition required five 12 microsecond cycles, two of which were refresh cycles, a multiplication or division required 38 cycles (456 microseconds).
Weitere Informationen
- Allgemeine Informationen
- GTIN 09786131464560
- Editor Lambert M. Surhone, Mariam T. Tennoe, Susan F. Henssonow
- EAN 9786131464560
- Titel IBM 701
- Herausgeber Betascript Publishing
- Anzahl Seiten 100
- Genre Informatik
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