1. What is scanning in display and what is the scan time? 2. What is the disadvantage in 7-segment LED interfacing using ports? 3. What is the advantage in using INTEL 8279 for keyboard and display...


1. What is scanning in display and what is the scan time?


2. What is the disadvantage in 7-segment LED interfacing using ports?


3. What is the advantage in using INTEL 8279 for keyboard and display interfacing?


4. List the functions performed by 8279.


5. What is the maximum number of keycodes that can be generated by 8279?





May 18, 2022
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