- A communication pathway connecting two or more devices
- Often grouped
---- A number of channels in one bus
---- e.g. 32 bit data bus is 32 separate single bit channels
Data Bus :
- Carries data
---- Remember that there is no difference between “data” and “instruction” at this level.
- Width is a key determinant of performance
---- 8, 16, 32, 64 bit
Address bus :
- Identify the source or destination of data
e.g. CPU needs to read an instruction (data) from a given
