UNIVAC 1101

The ERA 1101, later renamed the UNIVAC 1101, was a computer system designed and built by Engineering Research Associates in the early 1950s and sold afterward by Remington Rand, which bought the company in 1952. It grew out of the Navy funded code-breaking work of a team formed during World War II, and its military model, the ERA Atlas, was the first stored-program computer moved from where it was built and installed at a distant site, delivered to the Army Security Agency by December 1950. The commercial 1101 was announced in December 1951. It was 38 feet long and weighed about 8.4 short tons, used about 2,700 vacuum tubes and a magnetic drum memory of 16,384 24-bit words, and had 38 instructions. A series of machines on the same design was sold into the 1960s before the unrelated-in-design UNIVAC 1100 family replaced them.