- CPU is connected to memory and I/O through strip of wire called a BUS.
- BUS is a set of signal lines.
- BUS term introduced by Americans, earlier Britishers use to call this as HIGWAY.
- BUS has conductors.
Three types off buses:
Address BUS
Data BUS
Control BUS
For a device ( memory or I/O ) to be recognized by the CPU, it must be a assgined address.
The address assigned to a given device must be unique, no two devices are allowed to have same address. The CPU put the address on the address bus.
SPECIFICATIONS OF BUS:
- LOGICAL SPECIFICATIONS OF BUS:
- ELECTRICAL SPECIFICATION OF BUS:
- MECHANICAL SPECIFICATION:About pins etc ., ( 32,64 ... )
Data Transfer: Data
Priority Arbitration: Priority indicator, as par of the bus, it have dedicated signal lines for this.
Initialization: Power, system clock, monitoring power etc., ( It having another signal lies )
