The UNIVAC 1103 or ERA 1103, a successor to the UNIVAC 1101, was a computer system designed by Engineering Research Associates and built by the Remington Rand corporation in October, 1953. Engineering Research Associates, commonly known as ERA, was a pioneering computer firm from the 1950s. ... Remington Rand was an early American computer manufacturer, best known as the original maker of the UNIVAC, and now part of Unisys. ... 1953 is a common year starting on Thursday. ...

The UNIVAC 1103 had 1024 words of 36 bit Williams tube memory (first commercial computer to use random access memory). Each of the 36 Williams tubes was 5-inchs in diameter. A magnetic drum memory provided 16,384 words. Both the electrostatic and drum memories were directly addressable: addresses 0 through 01777 (Octal) were in electrostatic memory and 040000 through 077777 (Octal) were on the drum. The Williams tube or (more accurately) the Williams-Kilburn tube (after Freddie Williams and coworker Tom Kilburn) was a cathode ray tube used to store electronic data. ... Look up Random Access Memory in Wiktionary, the free dictionary Different types of RAM. From top to bottom: DIP, SIPP, SIMM 30 pin, SIMM 72 pin, DIMM, RIMM RAM redirects here. ... The Magnetic Drum was invented by G. Taushek in 1932 in Austria. ... The octal numeral system is the base-8 number system, and uses the digits 0 to 7. ... The octal numeral system is the base-8 number system, and uses the digits 0 to 7. ...

Fixed-point numbers had a 1 bit sign and a 35 bit value, with negative values represented in one's complement format. See also fixed point (mathematics). ... The word complement (with an e in the second syllable, not to be confused with a different word, compliment with an i) has a number of uses. ...

Instructions had a 6 bit operation code and two 15-bit operand addresses. An instruction set, or instruction set architecture (ISA), describes the aspects of a computer architecture visible to a programmer, including the native datatypes, instructions, registers, addressing modes, memory architecture, interrupt and exception handling, and external I/O (if any). ...

Programming systems for the machine included the RAWOOP one-pass assembler and SNAP floating point interpretive system authored by the Ramo-Wooldridge Corporation in Los Angeles, the FLIP floating point interpretive system by Consolidated Vultee Aircraft in San Diego, and the CHIP floating point interpretive system by Wright Field in Ohio. For other things named TRW, see TRW (disambiguation). ... The Consolidated Vultee Aircraft Corporation, universally known as Convair, was the result of a 1943 merger between Consolidated Aircraft and Vultee Aircraft, resulting in a leading aircraft manufacturer of the United States. ... National Museum of the United States Air Force at WPAFB Wright-Patterson Air Force Base is a U.S. Air Force base in Greene and Montgomery counties, adjacent to Fairborn and Dayton, Ohio. ...

History

Even before the completion of the Atlas (UNIVAC 1101), the Navy asked Engineering Research Associates to design a more powerful machine. This project became Task 29, and the computer was designated Atlas II.

In 1952, Engineering Research Associates asked the Armed Forces Security Agency (the predecessor of the NSA) for approval to sell the Atlas II commercially. Permission was given, on the condition that several specialized instructions would be removed. The commercial version then became the UNIVAC 1103. Because of security clearances, Remington Rand management was unaware of this machine before this. 1952 was a leap year starting on Tuesday (link will take you to calendar). ... This article is about the US government agency. ... This article is about the US government agency. ... Remington Rand was an early American computer manufacturer, best known as the original maker of the UNIVAC, and now part of Unisys. ...

Remington Rand announced the UNIVAC 1103 in February 1953. The successor machine was the UNIVAC 1103A or Univac Scientific, which improved upon the design by replacing the unreliable Williams tube memory with magnetic core storage, adding hardware floating point instructions, and a hardware interrupt feature. 1953 is a common year starting on Thursday. ... The UNIVAC 1103A or Univac Scientific was an upgraded version of the UNIVAC 1103 introduced by Sperry Rand in March, 1956. ...