The 202 Resistance is made by encapsulating several resistors with identical parameters together and combining them. Resistance is generally used in digital circuits, for example, as a pull-up or pull-down resistor for a parallel port. It is more convenient to use exclusions than to use several fixed resistors, which achieves a better simplification effect in the design of the Avalon 821 and 921 hash board circuit boards. The same resistors are integrated with one of the pins connected together to form a common pin. It brings the advantages of small size and light weight to the resistor, and the characteristics of placement also provide great convenience for the assembly process.