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A vacuum-tube computer, now termed a first-generation computer, is a computer that uses vacuum tubes for logic circuitry. While the history of mechanical aids to computation goes back centuries, if not millennia, the history of vacuum tube computers is confined to the middle of the 20th century. Lee De Forest invented the triode in 1906.
A follow-up to the UNIVAC 1103 scientific computer AN/FSQ-7: 1958 Largest vacuum tube computer ever built. 52 were built for Project SAGE. ZEBRA: 1958 55: Designed in Holland and built by Britain's Standard Telephones and Cables [24] Ferranti Perseus: 1959 2 [25] [26] [27] Rice Institute Computer: 1959 1: Operational 1959-1971, 54-bit tagged ...
Valves (vacuum tubes) seen on end in a recreation of the Colossus computer. Colossus was developed for the "Newmanry", [31] the section headed by the mathematician Max Newman that was responsible for machine methods against the twelve-rotor Lorenz SZ40/42 on-line teleprinter cipher machine (code-named Tunny, for tunafish).
The history of computing hardware starting at 1960 is marked by the conversion from vacuum tube to solid-state devices such as transistors and then integrated circuit (IC) chips. Around 1953 to 1959, discrete transistors started being considered sufficiently reliable and economical that they made further vacuum tube computers uncompetitive.
IBM 7151 Console Control Unit for 7090. The IBM 7090 is a second-generation transistorized version of the earlier IBM 709 vacuum tube mainframe computer that was designed for "large-scale scientific and technological applications".
This was the first commercial computer to use core memory instead of the Williams tube. The UNIVAC 1105 was the successor to the 1103A, and was introduced in 1958. The UNIVAC 1104 system was a 30- bit version of the 1103 built for Westinghouse Electric , in 1957, for use on the BOMARC Missile Program .
Computer vacuum tubes (3 P) I. IBM vacuum tube computers (17 P) Pages in category "Vacuum tube computers" The following 69 pages are in this category, out of 69 total.
7AK7 vacuum tubes in a 1956 UNIVAC I computer. UNIVAC I used 6,103 vacuum tubes, [24] [25] weighed 16,686 pounds (8.3 short tons; 7.6 t), consumed 125 kW, [26] and could perform about 1,905 operations per second running on a 2.25 MHz clock. The Central Complex alone (i.e. the processor and memory unit) was 4.3 m by 2.4 m by 2.6 m high.