摘要
本设计以AT89C2051单片机为核心,利用其内部的定时(计数)器完成待测信号周期(频率)的测量。本文首先对系统的信号预处理电路、控制电路和显示电路3大部分进行研究;然后采用RS232接口电路,并用汇编语言给出单片机发送程序;最后采用VB6编程实现PC串口接收控制。
The design centers on SCM-AT89C2051 , using inner timing（counting） device to measure period （frequency） of the signal. After researching on pretreating circuit, controlling circuit, displaying circuit of the system signal, the interface circuit RS232 is adopted with sending the programme based on assembly language to SCM. Finally, the serial interface receiver is controlled by the programme based on VB6.
出处
《电子测试》
2008年第1期24-28,共5页
Electronic Test
