A bus is a group of current-conducting wires over which data is transferred from one device to another. Their types are :
- Data bus :
- Transfers data
- Size is generally proportionate to CPU power. e.g. 64 bit CPU will have 64 bit wide bus.
- Generally bidirectional.
- Address bus :
- Carries the address of the device.
- Control bus :
- Carries control signals to devices.