Q6Microprocessor and Interfaces
Question
4 marks
Describe the interfacing of ADC and DAC with microprocessor.
Answer
Interfacing ADC and DAC allows the microprocessor to interact with the physical world.
Interfacing ADC (Analog to Digital Converter) and DAC (Digital to Analog Converter) allows the microprocessor to interact with the physical world.
- ADC Interfacing: The CPU sends a Start of Conversion (SOC) pulse. The ADC converts the analog signal to digital data. Upon completion, it sends an End of Conversion (EOC) signal. The CPU reads the data via an I/O port.
- DAC Interfacing: The CPU sends binary data to the DAC via an I/O port. The DAC immediately converts it to a proportional analog voltage or current output.