The vast majority of all transistors are nearly pure silicon, with small amount of carefully added impurities.
A small but significant number of transistors are mostly germanium.
Transistors are made out of semiconductors, yes.
Transistors are made from semiconductor materials. Silicon transistors are currently the most common.COMMONSiliconGermaniumGallium-Arsenide (GaAs)Silcon-GermaniumGallium Nitride (GaN)DiamondRARE
Yes it is!
Transistors are made of materials. They have to be extracted and purified. This relies on chemistry and Materials Science.
transistors..
Transistors
This is the gallium arsenide - GaAs.
Silicon
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.
Transistors have two basic functions: # an electrically controlled electric switch # an electrically controlled "proportional valve" which can alter currents and voltages, or can amplify electric signals. Transistors can also be configured as Oscillators which provide an AC signal with constant frequency. Either an amplifier circuit or a switching circuit can be wired as an oscillator. Transistors can be used to form logic gates: And, Or, and Invert. Computers are made from logic gates, so computers can be made entirely from transistors. Transistors are in use in virtually all electronic devices. PC processors are composed of millions of tiny transistors. A transistor radio may have had only 6-10 transistors to enable operation. A late model car may have 10 to 15 computers comprised of thousands of transistors to perform all manner of operations in the vehicle.
As transistors are made of semiconductors, they do notfollow Ohm's law.A: they cannot follow exactly ohms law since they are themselves no linear active devices
Transistors are made that are smaller than a human hair. Used as part of an integrated circuit chip, which may contain thousands of transistors.