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目前我国有许多通用的 TRS—80微型计算机和类似的机种,为了在工业生产过程中应用,必须配备模拟量输入通道,组成计算机控制系统,以实现数据采集,数据处理和过程控制的功能。本文将着重介绍接口简易的 BASIC 语言调用汇编语言子程序的方案和接口稍复杂的 BASIC 语言的方案,说明这两种方案的不同原理和特点以及实验结果。本文介绍的这两种方案力求简化硬件和软件,方便管理人员操作。
At present, there are many general TRS-80 microcomputers and similar models in our country. To be used in industrial production, analog input channels must be equipped to form a computer control system to realize the functions of data acquisition, data processing and process control. This article will focus on the interface simple BASIC language assembly language subroutine call program and interface slightly complex BASIC language programs to illustrate the different principles and characteristics of these two programs as well as the experimental results. The two scenarios described in this article seek to simplify the hardware and software for the convenience of the manager.