Main Page | See live article | Alphabetical index 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. 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. This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.