GP—IB接口系统中SH功能逻辑设计探讨

A Few Words on the GP-IB Interface System for the SH Function Logic Design

本文讨论了AH和SH功能逻辑电路在实现三线挂钩过程中所发生的状态不稳定现象,通过对状态图和逻辑设计过程分析,指出状态变迁不稳定的原因所在,并对SH功能的逻辑设计进行了改进。

This article discusses a case of state unstable on AH and S H togic circuits when the three-line-handshake is proceeded .Through an analysis of the state figures and logic design process, the reason of the state tramsfer to be unstable is pointed out. Then the logic design of SH function has been improved.