Vacuum tubes have been built in sizes as small as the eraser on the end of your pencil to as big as a bus. It all depends on the purpose and power requirements. The typical vacuum tube used in household radios and TVs was half an inch to one inch in diameter and two to five inches tall.
It used 5200 vacuum tubes.
first generation computers
Without the transistor you would need vacuum tubes to accomplish the same thing. None of our inexpensive portable electronics would be possible using vacuum tubes.
It depends on the application. Vacuum tubes work better under certain operating conditions and frequencies. The problem with vacuum tubes is they are not as easy to mass produce as semiconductor devices, and semiconductor devices such as integrated circuits can have litterally thousands or millions of transistors and other components on a single chip. Such scaling is not possible with vacuum tubes, though there is some research in the MEMS (Micro Electro Mechanical) field to suggest that micro scale vacuum tubes could be mass produced within an integrated circuit. Such applications could be useful in the Terahertz frequencies. When a lowcost and compact solution is preferred generally the silicon based microchips will be the best option.
It was difficult to change directions and the vacuum tubes always burned out
Vacuum tubes vary from thumb size to larger than most people. Integrated circuits or ICs' are the size of you little finger nail. There was nothing worth remembering before vacuum tubes.
8inchs
It used 5200 vacuum tubes.
I'm not sure what you mean by "this computer" but vacuum tubes have the following problems anywhere they are used:high voltage required for operationget very hotshort lifetime, heater burns outlarge physical size
No, there are some cold cathode vacuum tubes. These do not light.
who made the vacuum tubes
This would depend on the type of vacuum tubes needed. Any car part store will carry vacuum tubes for a car, general stores carry vacuum tubes for household vacuums, and AC part stores will carry vacuum tubes for the AC/Heating system of a house.?æ
Bell Labs researchers were unsatisfied with the low reliably, high power usage, and large size of the vacuum tubes that needed to be used in the telephone switching and long distance trunk systems of the 1940s.
ENIAC was the first digital general purpose computer, built in 1946, and with 17,468 vacuum tubes. The Illiac I, the first computer built and owned by a US educational institution, had 2800 vacuum tubes. The IBM 604 had about 2000 vacuum tubes.
Vacuum tubes were first replaced by transistors, and later by integrated circuits.
Modern devices use integrated circuits instead of vacuum tubes because integrated circuits occupy less space than vacuum tubes, are more efficient, consumes less energy and are more reliable than vacuum tubes.
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