摘要
介绍了一种基于单片机控制的小型智能电话交换系统,他能模仿市话呼叫处理的各种基本功能。详细描述硬件组成框图及基本电路,并采用单片机AT89C2051实现数字语音播报,使得外围电路简单,软件设计方便。
Introduced the principle of small telephone switchboard systematically, descripted the hardware composition diagram and basic electric circuit in detail, and used the single-chip AT89C51 to realize digital pronunciation, so the periphery electric circuit is simple, the software design is convenient.
出处
《微计算机信息》
北大核心
2006年第10Z期260-262,共3页
Control & Automation
关键词
电话交换机
单片机
DTMF
语音电路
telephone switch board,single-chip,DTMF,Pronunciation circuit
