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文章介绍了由８７Ｃ５１单片机开发的电子收款机的软、硬件设计及实现方法。该机具有多种功能。可与ＲＳ－４８５串行总线与ＩＢＭ－ＰＣ机联网。软件采用模块化结构设计，硬件系统包括了条形码输入、信用卡阅读及汉字打印等接口。
The paper introduces the software and hardware design and realization method of electronic cash register developed by 87C51 single chip microcomputer. The machine has a variety of functions. With RS-485 serial bus and IBM-PC network. Software modular design, hardware system includes a bar code input, credit card reading and Chinese characters such as print interface.