能够产生正弦波、方波、三角波。同时还可以作为频率计测频率。函数信号的产生由MAX038和外围电路完成，能产生1Hz—20MHz的波形。波形选择由单片机完成。输出或输入频率经74HC390分频后，由单片机完成自动频率检测显示-Capable of producing sine, square, triangle wave. At the same time can also be measured as a frequency meter frequency. Function signal ge

基于单片机的信号检测与发生，产生不同幅度和频率的方波、三角波、锯齿波、正弦波-Signal detection based on single chip and place, have different amplitude and frequency of the square wave, triangle wave, sawtooth, sine