单片机频率检测中的软硬件设计。该电路及应用软件为单片微机在实时检测及控制中准确地测试提供了方便，经实际运行，效果良好。只

要配上相应的传感器，即可用于速度、位移、压力、温度、湿度、流量等非电量的检测，装上显示电路和打印机即可构成实用的智能化仪表。-SCM frequency detection of hardware and software design. The circuit and application software for single-chip microcomputer in real-time detection and control of test accurately provides a convenient, practical operation, the results were very good. As long as the allocation of the corresponding sensor can be used for speed, displacement, pressure, temperature, humidity, flow, and other non-consumption testing, installing display circuit and printers can pose practical Intelligent Instrumentation.