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The UNIVAC 1103A or Univac Scientific was an upgraded version of the UNIVAC 1103 introduced by 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 numbers had a 1 bit sign and a 35 bit value, with negative values represented in one's complement format.
Floating-point numbers had a 1 bit sign, an 8 bit characteristic, and a 27 bit mantissa.
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.
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UNIVAC - Wikipedia, the free encyclopedia (2157 words) |
 | The UNIVAC division of Remington Rand was renamed the Univac division of Sperry Rand. |
| The UNIVAC 1103 was a successor to the UNIVAC 1101 introduced in 1953. |
| The UNIVAC 1105 was the successor to the 1103A, and was introduced in 1958. |
| UNIVAC 1103A (91 words) |
| The UNIVAC 1103A was an upgraded version of the UNIVAC 1103 introduced by 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 numbers had a 1 bit sign and a 35 bit value, with negative values represented in one's complement format. |
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