基于单片机的IC卡小规模销售系统

本文介绍了以MCS -8031单片机为核心组成的下位管理、收款机及IC卡作为数据载体的小规模销售系统。本系统有两种工作方式 :PC机加该系统的二级销售方式及小规模销售系统独立工作的一级销售方式。本文重点介绍下位管理、收款机的工作原理、硬件实现和技术特点 ,最后介绍了采用二级销售方式时下位机RS485的硬件实现和有关技术问题。

This paper introduces a microcomputer-controlled small scale sale system which is based on IC card. The system supports two working modes:individual and networks. The structure, feature and theory of the lowersets is introduced. In the end, the design of RS485 net-based linking is introduced as well.