一种具有光柱显示功能的测控仪表

介绍了以ＡＴ８９Ｃ２０５１微控制器为核心的一种测控仪表的设计，着重讨论了如何通过模拟串口实现光柱和数字的混合显示的软件和硬件设计，并提出了多个模拟串口公用数据线传输的方法。由于本设计充分利用了微控制器的软，硬件资源，使得该仪表集双路光柱，数字显示于一体，并具有控制和通信功能，而且便于扩充。

A SURVEY INSTRUMENT WITH BAR POINT DISPLAY FUNCTION

A type of survey instrument with a mixed bar point and digital display function is developed based on a piece of AT89C2051 microcontroller. The software and hardware used is presented in detail and the method for multiple simulative serial port data transmission over a public line is also given. Because the design makes full use of the microcontroller's software and hardware resources, the resulted instrument has an integrated function to display in form of both digits and a 2 channel bar consisting of up to 128 points, to work for control and communication, and to be easily extended.