Question

For demultiplexing address and data lines which pin in 8086 is used

Answer 1

Answer:

In 8086 microprocessor Pins AD0 – AD15 are used for the data bus. - However the same pins are also used for Address bus as well. - The ALE (Address Latch Enable –pin 25) signals whether the information on pins AD0 – AD15 is used address or data.

Answer 2

A0-A15 pins are used to demultiplex address and data in microprocessor 8086

Explanation:

1. the microprocessor 8086 has total of 40 pins out of which 16 pins AD0-AD15 are used to demultiplex address and data.
2. these are low order address bus and are multiplexed with with data.
3. when AD lines are used to transmit address they are denoted by A only. for example, A0-A7.
4. when they are used to transmit data they are by D only. for example, D8-D15
5. this multiplexing between data and address is done using signal ALE (address latch enable). when this signal is high (that is 1) the AD lines transmit address and when its low (that is 0) the AD lines transmit data.