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From November 17, 1947 to December 23, 1947, John Bardeen and Walter Brattain at AT&T's Bell Labs in the United States performed experiments and observed that when two gold point contacts were applied to a crystal of germanium, a signal was produced with the output power greater than the input.Solid State Physics Group leader William Shockley saw the potential in this, and over the next few months worked to greatly expand the knowledge of semiconductors
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Who invented dungarees?
When were dungarees invented?
When were sandbags invented?
Sand bags where invented in the 1800's. The man/woman who invented them is unknown
When was the first weapons invented and who invented them?
They cave men invented them and we don't really know. The first weapon invented was an ulu. The first weapon discovered was the spear.
How has technology changed since world war 1?
There was no radar in WW1. Radar was first developed in the late 1930's and regular improvements have happened ever since then. Notable improvements were transistors and later digital technology.
Why were missiles invented?
They are invented By the Germans. Atleast for combat.
Who is the inventor of transistors?
in 1948, john bardeen, Walter brattain, William schockley jointly invented transistors at bell labs in USA.
What year was 4th generation computers invented?
Fourth Generation Computers (which are Microprocessors) were invented through the development of Transistors. Transistors were created by William Shockley, John Bardeen and Walter Brarttain. Therefore, it is hard to tell a specific inventor of the Microprocessor.
What was the price of a 1947 computer the transister?
There were no transistors in 1947, they weren't invented until 1949.
What are power transistors?
Power transistors are transistors that are used in high-power amplifiers and power supplies.
What was invented between 1918 and 2018?
Much of modern technology was invented in that time, including the Internet, most of the technology relevant for computers, vacuum tubes, transistors, spacecraft, etc., etc., etc....
Why did the colossus need valves?
Because - when Colossus was built (in 1943), microchips had yet to be invented ! Microchips replaced valves and transistors in newer computers.
Are transistors semiconductors?
Transistors are made out of semiconductors, yes.
Was Germanium used in transistors?
Yes, germanium was the only material used in transistors from when they were invented in 1947 until 1954 when the first successful silicon transistor was made. However the use of germanium still dominated transistors until the silicon mesa transistor was made commercially available by Fairchild Semiconductor in 1958. Development of the silicon planar transistor by Fairchild Semiconductor the next year ultimately made the integrated circuit possible. While almost all transistors today are silicon, there are still uses for germanium transistors so a few types are still made.
What element are in transistors?
Silicon and germanium are the elements used in transistors
What elements in in transistors?
Silicon and germanium are the elements used in transistors
Why are npn transistors used more often than pnp transistors?
The primary reason that NPN transistors are used more often than PNP transistors is that they usually operate faster (at higher frequencies) because the mobility of the current carriers in NPN transistors (electrons) is much higher than that of the current carriers in PNP transistors (holes).
What elements are used in transistors?
Silicon and germanium are the elements used in transistors
