Click On the Download Button Below 
Introduction to Basic Input Output :-
- The I/O subsystem of a computer provides an efficient mode of communication between the central system and the outside environment. It handles all the input-output operations of the computer
- I/O devices that are connected to computer are called peripheral These devices are designed to read information in to or out of the memory unit upon command from the CPU and are designed to be the part of computer system.
- These devices are also called as Below is the three types of peripherals discussed here
- Input Peripherals-Allows user input, from the outside world to the computer. Eg Keyboard, mouse etc.
- Output Peripherals- Allows information output, from the computer to the outside world. Example printer,monitor etc.
- Input-Output Peripherals- Allows both input(from outside world to computer) as well as output(from computer to the outside world) Example Touch Screen etc.
- Interface is a shared boundary between two separate components of the computer system which can be used to attach two or more components to the system for communication purposes.
- So there are two types of interface :- a)CPU Interface b)I/O
- Peripherals connected to a computer need special communication links for interfacing with CPU. In computer system, there are special hardware components between the CPU and peripherals to control or manage the input-output transfers.
- These components are called input-output interface units because they provide communication links between processor bus and peripherals.
- They provide a method for transferring information between internal system and input-output devices.
Objectives of Basic Input Output :-
At the end of this unit, the student will be able to
- Describe about the different I/O devices
- Elaborate the concept of data transfer between processor and I/O devices
- Illustrate the concept of Interrupts and Exceptions