一、引言 IEEE—488总线系(美)电子与电气工程师学会于1975年审订的一种仪用数据总线标准。总线标准的最新版本系1978年修订的,因此以下有关总线标准说明将遵循IEEE—488—1978规定。本文在介绍总线命令的同时对这种通用总线结构予以扼要描述。所介绍的内容未涉 I. INTRODUCTION IEEE-488 bus system (the United States) Institute of Electrical and Electronic Engineers in 1975 to review an instrument data bus standard. The latest version of the bus standard was revised in 1978, so the following description of the bus standard will follow the IEEE-488-1978 regulations. This article introduces the bus commands at the same time on this general-purpose bus structure is briefly described. The introduction of the content is not involved