A bus is an array of wires, that simultaenously convery convey a single bit along each line.
Two types of buses are commonly found in computer systems: ?
- Point-to-point: bus is connected to just two components
- Multi-point: many components can access the one bus
The system bus consists of: ?
- Data lines: Convey bits from one device to another.
- Control lines: Determine the direction of data flow and when each device can access the bus.
- Address lines: Determine the data source or destination location.
A typical multi-point bus configuration looks like:
