【摘要】 介绍了用单片机实现多路电话终端营业计费的方案，讨论了单片机的速率、指令功能所支持的电话计费的容量和运算要求，叙述了硬件电路和软件设计方法，并给出了电路和程序的简图。更多还原

【Abstract】 The scheme of multicahnnel telephone charging at terminal is introduced. The capacity and calculations for telephone charge which permitted by single-chip processor’s speed and instructions are discussed. The structurees of hardware and the design of software are described. The circuits and the program diagram are also given.更多还原