直线电话计费系统的设计

A Design of direct line telephone charging system

利用PC机与MCS - 5 1单片机 ,设计并实现了直线电话计费系统。该系统可以实现电话话单的记录、话费的统计与结算、用户话机权限控制、密码电话等功能。

This paper devise and complete a direct line telephone charging by MCS-51 single chip computer and PC.The record and statistic of telephone charging,the control of user grade and cipher code telephone are developed deveploped in this system.