Duduli

A wafer is a thin slice of semiconductor material, such as a crystalline silicon, used in electronics for the fabrication of integrated circuits. It is used in photovoltaics for conventional wafer-based solar cells. A wafer is also called a slice or substrate, wafer fabrication is a procedure composed of many repeated sequential processes to produce complete electrical or photonic circuits. Wafer are used in the production of radio frequency (RF) amplifiers, LEDS, Optical computer components, and CPUs for computers.

It is an integrated circuit which contains 10 to 100 transistors and 10 gates with in a single package & performs digital operations like adder, decoders, counters, & multiplexer.

An integrated circuit is one in which circuit components such as transistors,diodes, resistors, capacitors etc. are automatically part of a small semiconductor chip.