Design of Digital Frequency Meter Based on Embedded System

The frequency meter is widely used in the electronic equipment measured with respect to. As researchers continue to improve and upgrade frequency counters, the commonly used digital frequency counters now generally use digital circuits to measure the frequency of periodic signals. The frequency output value of the measured signal is converted by the internal algorithm of the digital cymometer, and the final measurement result will be converted into a decimal number and displayed on the display screen, which can make the measurement result more intuitive and improve the frequency measurement efficiency. In this design, the frequency of the measured signal is collected by the STC89C52 single-chip microcomputer. After the signal is collected, the internal of the single-chip microcomputer will analyze and convert the collected signal, and the final analysis and conversion result will be displayed on the LCD 1602 LCD screen.