一种PC总线多功能扩展卡

A Multi-Functional PC Bus Extension Card

讲述了PC总线多功能扩展卡的特性,包括软件编程、硬件设计及使用方法。由于该卡设计简单、成本低,具有通用I/O卡和A/D卡的功能,且通过该卡I/O还可扩展其他接口电路,因此可广泛应用于小型微机自动控制系统中。

Describes the specifications of a multi-functional PC bus extension card. Programming methods, hardware design and card usage are presented. The card integrates the functions of a general I/O card and A/D card. Other interface circuits may be extended by using I/O ports of this card. Simple design and low cost make it easy to be used widely in automatic control systems on small computers.