ADC0809 microcontroller analog-digital conversion and display, the hardware circuit is the smallest system by AT89C51, ADC0809 analog-digital conversion module, the display module to form these modules. Using two procedures to achieve ADC0809 query work and interrupt work. The main program flow is the use of software to achieve the ADC0809 clock signal, so the program design Timer 1 interrupt, interrupt service routine each time, will change the ADC0809 clock pin connected to the level of a simulation ADC0809 required clock signal.

ADC0809
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