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Replica of the Atanasoff–Berry computer at Iowa State University The 1946 ENIAC computer used more than 17,000 vacuum tubes. 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 ...
Vacuum-tube computers, now called first-generation computers, [1] are programmable digital computers using vacuum-tube logic circuitry. They were preceded by systems using electromechanical relays and followed by systems built from discrete transistors. Some later computers on the list had both vacuum tubes and transistors.
Colossus was a set of computers developed by British codebreakers in the years 1943–1945 [1] to help in the cryptanalysis of the Lorenz cipher.Colossus used thermionic valves (vacuum tubes) to perform Boolean and counting operations.
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.
Pages in category "Vacuum tube computers" The following 69 pages are in this category, out of 69 total. This list may not reflect recent changes. ...
The 1946 ENIAC computer used 17,468 vacuum tubes and consumed 150 kW of power. Vacuum tubes used as switches made electronic computing possible for the first time, but the cost and relatively short mean time to failure of tubes were limiting factors. [ 53 ] "
A January 15, 1941, story in the Des Moines Register announced the ABC as "an electrical computing machine" with more than 300 vacuum tubes that would "compute complicated algebraic equations" (but gave no precise technical description of the computer). The system weighed more than seven hundred pounds (320 kg).
Whirlwind I was a Cold War-era vacuum-tube computer developed by the MIT Servomechanisms Laboratory for the U.S. Navy.Operational in 1951, it was among the first digital electronic computers that operated in real-time for output, and the first that was not simply an electronic replacement of older mechanical systems.