介绍了用单片机8031与8155 RAM/IO扩展器等构成的计时、计数、记分、大屏幕数字显示等多功能系统?。
The paper introduced the multi—function system of 8031, 8155 RAM/IO single—chip microcomputer such as counting, scoring, screensize digit displaying and etc.
该产品可以测量温度、湿度和大气压力，并有两个精度等级可选，此外，PTU300系列带有大屏幕数字显示器。还有可供选择的数据采集和(W) LAN界面。
Measures humidity, temperature, and barometric pressure in two accuracy classes. The PTU300 series features a large numerical and graphical display. Optional data logging and (w) LAN interface.
讨论了大屏幕数字温度显示的几种方案，介绍了一种性能、价格比优良，电路较简单的总体方案及其电路原理。
Several programmes on large screen digital display of temperature are discussed and an overallprogramme with a better performance, low price and a much simpler circuit is presented.
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