此为基于单片机的频率计设计。利用汇编语言实现了采样频率，用LED数码管输出频率数值等功能。-This is based on the frequency of single-chip design. The use of assembly language to achieve a sampling frequency, with LED digital tube output frequency numerical functions.

基于单片机的低频相位及频率测量 低频相位及频率计的设计，要求本设计能够实时正确地反映正弦波的频率和相位的数值。-Based on the design the microcontroller low frequency phase and frequency measurement of low-frequency phase and frequency require the design of real time to reflect the values ​ ​ of

基于c8051f020单片机的频率计课程设计-failed to translate

由P3.4输入脉冲的频率，测得频率送LED数码管显示。(The frequency of the pulse is input by P3.4, and the measured frequency is displayed by the LED digital tube.)