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。-This digital frequency meter will use fixed time, the counting method survey frequency, uses 1602The LCD monitor dynamic to demonstrate 6 figures. The measuring range from the 1Hz-10kHz sine wave, the square-wave, the triangular wave, the time base width is 1us,10us,100us,1ms. Realizes the automatic sizing function with the monolithic integrated circuit.