Digital Electronics - Microprocessor Fundamentals - Discussion

The data bus and memory can share the a bidirectional bus... But this will not allowed... Its false...

The Address bus and data bus can share the bidirectional bus.

Only address bus nd data bus can share the bidirectional bus.

Only data Bus and address bus can share the bidirectional bus.

Bidirectional bus = data bus.

Memory share data bus to transfer operands, opcodes. Etc.

By control bus only control signals read write. Etc will be transferred.

Among 1)Address bus 2)Data bus 3)Control bus of a microprocessor.

Address bus is unidirectional as address is generated by microprocessor and is passed to i/o devices.

Data bus is bidirectional as data signal can flow from microprocessor to i/o devices, memory and from memory to i/o device.

Control bus is bidirectional as it transfer the control signals from control unit to all the i/o devices and vice versa.

Address bus = Unidirectional

Data bus = Bi-directional

But Control Bus is use for control the signal we cant say it is Bi or Uni directional.

@Neeraj.

You are correct as Control bus are a different group of the signal, they do not require any direction or word length.