一、引言数据记录仪具有信息采集、显示、打印、传输和简单的数据处理功能,目前正被广泛地应用在各种现场测试中。然而,对信息的进一步加工和深加工,一般要在内存容量较大的微型计算机上进行。为了解决数据记录仪与微型计算机相互传送信息的问题,我们利用两者都具有的串行(或并行)通讯功能,成功地实现了Digitrend235数据记录仪与HP-85微机的异步串行通迅和Fluck240C数据记录仪与HP-85(或IBM PC)间的并行通讯。现在,可以从HP-85微机的键盘上打入Digitrend235机的指令,按用户需要,即时或周期地显示、打印、存储采集的数据。同时,可以从外存储器(如磁带或磁盘)中,读出数据,进行必要的 I. INTRODUCTION Data recorder has the functions of information acquisition, display, printing, transmission and simple data processing. It is widely used in various field tests. However, further processing and further processing of information generally takes place on microcomputers with larger memory capacities. In order to solve the problem that the data logger and the microcomputer transmit information to each other, we successfully implement the asynchronous serial communication between the Digitrend 235 data logger and the HP-85 microcomputer using the serial (or parallel) communication function of both Parallel communication between Fluck240C data logger and HP-85 (or IBM PC). The Digitrend235 can now be typed into the HP-85 PC’s keyboard to instantly display, print, and store the collected data as needed. At the same time, you can read data from external memory (such as tape or disk), make the necessary