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clever angel

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hi

can some1 provide me with a structured coherent answer for this dotpt:

discuss how shortcomings in available technology led to increased research into the properties of materials with particular invention of the transistor

thankxx
 

香港!

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clever angel said:
hi

can some1 provide me with a structured coherent answer for this dotpt:

discuss how shortcomings in available technology led to increased research into the properties of materials with particular invention of the transistor

thankxx
There were many problems associated with vacuum tubes. One such was the serious limitation it placed on long distance communication. They had the limitation of being physically large, needing a start up time and were not as fast.
As they were made of glass they were also fragile. These limitations compelled searches for a better replacement Three scientists: John Bardeen, Walter H Brattain and William B. Shockley invented the transistor in 1947. This solved many of the problems associated with shortcomings in available communication technology.

Please add more if anyone has anything nice!
 

gordo

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Radio and electronics required the ability to increase the voltages of signals to drive loudspeakers and other electrical devices. This could be achieved by vacuum tubes.
The tubes however were fragile, lost vacuum slowly and the electrodes corroded.

In 1948 Bardeen, Brattain and Shockley discovered the transistor. It consists of an n-type semiconductor, called the base, between two p-type semiconductors, called the emitter and the collector.

A small AC current in the emmitter-base circuit produces a large current flow in the emmitter-collection circuit that is proportional to the AC current in the emmitter-base circuit. This is a transistor amplifier.

The transistor is small, long lasting and reliable, not depending on any moving parts. It quickly replaced the vacuum tube in many electronic devices.
 

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