The full form of IC is Integrated Circuit. An IC is a small electronic device made of semiconductor material that contains various microscopic elements like transistors, diodes, capacitors, and resistors. All these elements are interconnected and fabricated as a single unit on a thin sheet of semiconductor material, particularly silicon. ICs are used in a variety of devices like microprocessors, audio equipment, video equipment, mobiles, television sets, and automobiles. ICs are classified based on the level of integration of electronic components, and they can be categorized as SSI (Small Scale Integration), MSI (Medium Scale Integration), VLSI (Very Large Scale Integration), and ULSI (Ultra Large Scale Integration) . ICs can also be classified as Analog IC, Digital IC, or a combination of both.