Example: Touch screen etc.

Example: Printer, Monitor etc

Example: Keyboard, Mouse etc

I/O subsystems include

is a set of wires that acts as a shared data path to connect multiple subsystems within the system

A bus consists of multiple lines allowing parallel movements of bits

Buses are …. cost & ….

It is hard to connect new devices to each other and to the system

At any one time only one device may use the bus

The speed of the bus is affected by

connect a number of devices, requiring these devices to share the bus

multipoint bus

connecting two specific components

is a bus that connect major components

System bus contains many hundreds of separate lines and each group of them has a separate function

System bus is separated into

CPU and main memory can address each other

CPU can address main memory

main memory can address CPU

Address bus is

Data bus is