How to interface ADC0808 using clock from 8051 microcontroller (AT89C51)
An analog-to-digital converter is a device which converts continuous signals to discrete digital numbers. Typically, an ADC is an electronic device that converts an input analog voltage (or current) to a digital number proportional to the magnitude of the voltage or current. This circuit demonstrates the interfacing of ADC0808 using 8051 microcontroller (AT89C51). The digital output is taken on a set of LEDs. This is an intermediate circuit which finds several applications. This circuit depicts a way to provide the external clock, required for ADC, from the microcontroller.
DescriptionAnalog-to-digital converters are among the most widely used devices for data acquisition. Digital computers use binary values, but in physical world everything is analog. Therefore, we need an analog-to-digital converter to translate these analog signals to digital signals.
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ADC0808 is an 8 bit analog to digital converter with eight input analog channels, i.e., it can take eight different analog inputs. The input which is to be converted to digital form can be selected by using three address lines. The voltage reference can be set using the Vref+ and Vr...
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