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UNIVAC 1103A
The '''UNIVAC 1103A''' or Univac Scientific was an upgraded version of the UNIVAC 1103 introduced by UNIVAC|Sperry Rand in March, 1956.
The UNIVAC 1103A had up to 12,288 words of 36 bit magnetic core memory, in one to three banks of 4,096 words each.
fixed-point arithmetic|Fixed-point numbers had a 1 bit sign and a 35 bit value, with negative values represented in one's complement format.
floating point|Floating-point numbers had a 1 bit sign, an 8 bit characteristic, and a 27 bit mantissa.
Instruction set|Instructions had a 6 bit operation code and two 15-bit operand addresses.
The 1103A was contemporary to the IBM 704, which also employed vacuum tube logic, magnetic core memory, and hardware floating point.
See also
- List of UNIVAC products
- History of computing hardware
External links
- Oral history interviews on ERA 1103A, Charles Babbage Institute, University of Minnesota. Interviewees include William W. Butler; Arnold A. Cohen; William C. Norris; Frank C. Mullaney; Marvin L. Stein; and James E. Thornton.
Category:UNIVAC hardware|1103A
Category:Early computers
Category:Mainframe computers
Category:1956 introductionsRelated Images
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