Bus is a subsystem that transfers data between:
- or between computers.
Physically, buses are just electrical wires that connect all components together and each wire transfer a single bit.
Connection of computer processors
- wiki/Front-side_bus (old - 1990s and 2000s - not more used)
The size, width of a bus can be:
- one byte
Physically, the total number of wires is called bus width, and is dependent on how many wires a CPU can support. If a CPU can only accept 16 bits at a time, then the bus has 16 wires connecting from a component to the CPU, which means the CPU can only retrieve 16 bits of data a time.