external cable

The bus technologies,especially the external bus technologies take a very important part in the instrument ATS,and are also considered as the bridge and tache of the ATS.

总线技术,特别是外部总线技术在装备自动测试系统(ATS)中占有十分重要的地位,是构成装备自动测试系统的桥梁与纽带。

In the light of different equipments connected, BUS can be classified into internal BUS, on-board partial BUS, system BUS, and external BUS, among which the on-board partial BUS has the most significant influence to the performance of the system.

根据连接设备的不同 ,总线一般可以分为内部总线、在板局部总线、系统总线和外部总线四种。

In the chip microcomputer system that may not make use of external bus(such as the system composed of AT89C51),data bus of ADC0809 can be directly connected with I/O port of the chip microcomputer,which controls ADC0809 directly.

ADC0 8 0 9是广泛使用的模 /数转换器 ,在可不采用外部总线结构的单片机系统中 (如由 AT89C5 1组成的系统 )。

This paper discussed the problems of frequency converter installation,including environmental requirements,protection requirements and external circuit connection.

本文全面论述了变频器安装方面的有关问题,其中包括安装的环境要求、防护要求及外部接线的有关问题。