The Importance Of Transistors

A transistor, whose real name is a semiconductor triode, is a semiconductor device with two PN junctions inside and three lead-out electrodes outside. It has the functions of amplifying and switching electrical signals, and is widely used. Both the input stage and the output stage use transistor logic circuits, which are called transistor-transistor logic circuits, and are referred to as TTL circuits in books and practical applications. The TTL NAND gate is a circuit system composed of several transistors and resistive elements manufactured on a small silicon wafer and packaged into an independent component. The transistor is one of the most widely used devices in the semiconductor triode, and is represented by "V" or "VT" (the old text symbols are "Q", "GB", etc.) in the circuit.