The body tube, whose name is semiconductor triode, is a semiconductor device containing two PN junctions inside and usually three leading electrodes outside. It has the function of amplifying and switching electrical signals, and is widely used.
The input and output stages use transistor logic circuit, called transistor-transistor logic circuit, books and practical are referred to as TTL circuit, it belongs to a semiconductor integrated circuit, which is the most commonly used TTL and not gate. TTL and not gate is a circuit system composed of several transistors and resistance components concentrated on a small silicon chip, packaged into an independent component. Transistors are one of the most widely used devices in semiconductor triodes, and are represented in circuits by \"V\" or \"VT\" (the old text symbol is \"Q\
The transistors in a chip are made of semiconductor material. Specifically, these semiconductor materials are usually silicon or germanium. When these semiconductor materials are doped with different types of impurities, they can conduct current or control current.
Between the three electrodes of the transistor, the semiconductor material is constructed as two PN junctions, which perform the function of switching or amplifying the current. Therefore, it can be said that the transistors in the chip are made of semiconductor materials, of which the most commonly used material is silicon.