本数字频率计将采用定时、计数的方法测量频率，采用一个1602A LCD显示器动态显示6位数。测量范围从1Hz—10kHz的正弦波、方波、三角波，时基宽度为1us,10us,100us,1ms。用单片机实现自动测量功能。-The digital frequency meter will adopt the method of timing, counting measuring frequency, USES a model 1602 a dynamic LCD display 6 digits. Measuring range　1 hz- 10 KHZ sine wave, square wave, triangle wave, time base width is 1 us, us 10, 100 us, 1 ms. Single-chip microcomputer is used to implement automatic measurement function.