It discussed the principle and the way to isolate and drive the industry standard architecture(ISA) bus signal of a microcomputer, and it presents a practical circuit of isolating and driving the ISA bus signal.

• 讨论了微机ISA总线信号的隔离及驱动电路的设计原则与方法，并给出了一种实用的PC机总线隔离与驱动电路。