Question

Explain the need to demultiplex the bus ad7-ad0 in 8085 microprocessor

Answer 1

Answer:

As AD7-AD0 lines serve a dual purpose they have to be demultiplexed to get all the information. The address's high order bits remain on the bus for 3 clock periods. The low order bits remain for only 1 clock period and may be lost if they are not saved externally.