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The UNIVAC I (Universal Automatic Computer I) was the first general-purpose electronic digital computer design for business application produced in the United States. It was designed principally by J. Presper Eckert and John Mauchly , the inventors of the ENIAC .
The UNIVAC Solid State was a 2-address, decimal computer, with memory on a rotating drum with 5,000 signed 10-digit words, aimed at the general-purpose business market. It came in two versions: the Solid State 80 (IBM-Hollerith 80-column cards) and the Solid State 90 (Remington-Rand 90-column cards).
Front of the Xerox Sigma 9. On display at the Living Computer Museum in Seattle, Washington. The Xerox Sigma 9, also known as the XDS Sigma 9, is a high-speed, general purpose computer. Xerox first became interested in office automation through computers in 1969 and purchased Scientific Data Systems or SDS.
ENIAC was a large, modular computer, composed of individual panels to perform different functions. Twenty of these modules were accumulators that could not only add and subtract, but hold a ten-digit decimal number in memory. Numbers were passed between these units across several general-purpose buses (or trays, as they were called). In order ...
The CPU had an accumulator register of 48 bits, three general-purpose registers of 24 bits, and 32 index registers of 15 bits. Main memory size ranged from 4K words to 64K words. Only the first model had a magnetic drum memory; later editions used tape drives. The Model 212 weighed about 6,500 pounds (3.3 short tons; 2.9 t). [22]
The machine would also be able to punch numbers onto cards to be read in later. The engine would incorporate an arithmetic logic unit, control flow in the form of conditional branching and loops, and integrated memory, making it the first design for a general-purpose computer that could be described in modern terms as Turing-complete. [24] [25]
1961 Semiconductor Network Computer (Molecular Electronic Computer, Mol-E-Com), [1] [2] [3] first monolithic integrated circuit [4] [5] [6] general purpose computer (built for demonstration purposes, programmed to simulate a desk calculator) was built by Texas Instruments for the US Air Force.
Data General Nova, serial number 1, on display at the Computer History Museum. A minicomputer, or colloquially mini, is a type of general-purpose computer mostly developed from the mid-1960s, [1] [2] built significantly smaller and sold at a much lower price than mainframe [3] and mid-size computers from IBM and its direct competitors.