UNIVAC II
The UNIVAC II was a mainframe computer from the Universal Automatic Calculator series manufactured in the USA .
The UNIVAC II was an evolution of the UNIVAC I . Above all, the main memory was expanded to 2,000 to 10,000 machine words, UNISERVO II magnetic tapes, which could either use the old UNIVAC I magnetic tapes or the new Mylar- based tapes. Some circuits were implemented on the basis of transistors (the UNIVAC II was still tube-based). The UNIVAC II was completely compatible with the UNIVAC I, both in terms of the program instructions and the data structures.
properties
- Internal numerical coding: binary coded decimal system
- Byte length machine word: 12
- Byte length instruction code: 6
- Arithmetic system: fixed point number
- 5200 vacuum tubes
- 18,000 crystal diodes
- 120 transistors
- Power consumption: 124.7 kW
- Height: 2.6 m
- Length: 4.4 m
- Weight: 7257 kg
- Drum memory with 10,000 machine words
- Magnetic tapes UNISERVO-II 100 in / sec
- Keyboard
- Punch cards after magnetic tape converter 240 cards / minute
- Paper after magnetic tape converter 200 characters / second
Customers
The UNIVAC II was used by various customers: The US Navy , which used the machine for inventory management, the US Department of Agriculture , which used the machine to calculate and manage transactions for the "wheat price" in over 31 states, the Metropolitan Life Insurance Company , which owned four machines and used the machines for payroll, accounts receivable, invoicing and other actuarial calculations, the Pacific Life Insurance Company with a similar field of application as at the Metropolitan Insurance, and at the United States Steel Corporation , which used the machine to solve mathematical problems .
Web links
- Martin H. Weik: Universal Automatic Computer Model II. In: A Third Survey of Domestic Electronic Digital Computing Systems. Report No. 1115. Ballistic Research Laboratories, Aberdeen Proving Ground, Maryland, March 1961, pp. 992-1001 .