In recent years, with the rapid development of wireless technology and electronic technology , digital cymometer has used in experiment , research& design , manufacture at electronic and communication fields.Digital cymometer is one of the important measurement tools in the field of modern electronic technology, it is also widely used in many other areas of the measuring instruments. It can measure not only the sine wave, square wave, triangle wave, a sharp pulse but also can measure other characteristics of the signal wave.
The paper introduces one cymometer system based on singlechip which applys the singlechip`s function of operation and control and displays ther result by led. The system measures up design precision at low cost.
Single-chip Direct Frequency Measurement Method is used in this design , By the hardware circuit and software to achieve, Circuit stability, high accuracy, Mainly involved in signal pre-processing, waveform and frequency conversion, data acquisition, calculation, conversion, and range of features such as automatic conversion of the software and hardware modules .