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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。
Using PC and MCS - 51 MCU, a direct telephone billing system was designed and implemented. This system can realize the record of telephone bill, the statistics and settlement of telephone bill, the control of user telephone authority, the password telephone and so on.