Microprocessors and Microcontrollers: Unit IV: (f) A/D and D/A Converter Interfacing with 8085
Analog to Digital Converter
Review Questions : 1. What is analog to digital converter ? 2. Explain how to convert an analog signal into digital signal. 3. Why do we need A/D converter and D/A converter ? 4. What are the applications of D/A converter interfacing with 8255 ?
Analog to Digital Converter
The
A/D conversion is a quantizing process whereby an analog signal is converted
into equivalent binary word. Thus the A/D converter is exactly opposite
function that of the D/A converter.
Fig.
13.4.1 shows symbol for A/D converter.
The
Fig. 13.4.2 shows the digital output of an ideal 3-bit ADC plotted against the
analog input voltage.
Review Questions
1. What is analog to
digital converter ?
2. Explain how to
convert an analog signal into digital signal. AU : June-06, Marks
16
3. Why do we need A/D
converter and D/A converter ? AU : Dec.-11, Marks 2
4. What are the applications of D/A converter interfacing with 8255 ? AU : May-12, Marks 2
Microprocessors and Microcontrollers: Unit IV: (f) A/D and D/A Converter Interfacing with 8085 : Tag: : - Analog to Digital Converter