Abstract:this system can have the sine wave, the square-wave, the triangular wave. Simultaneously may also take the frequency measurement frequency. The function signal's production completes by MAX038 and the peripheral circuit, can have the 1Hz-20MHz profile. The profile choice completes by the monolithic integrated circuit. Output or input frequency after the 74HC390 frequency division, completes the automatic frequency detection demonstration by the monolithic integrated circuit.
key word:Profile producer, frequency meter, MAX038, 74HC390, AT89S51.