Definition Types Importance Advantages Disadvantages

1. BY K. ANJALI
B.SC.B.ED.MATHEMATICS
Input Devices

2. Content
 Definition
 Types
 Importance
 Advantages
 Disadvantages

3. Input Devices
An Input Device sends information to a computer system. The
computer will then display or reproduce that information via one or
more output devices.
Or
An Input Device is a hardware device that transfers data to a
computer system and allows us to control it.
For example – Mouse, Keyboard etc.

4. Types of Input Devices
 Keyboard
 Mouse
 Scanner
 Light pen
 Barcode Reader
 Microphone
 Touchscreen
 Joystick
 Webcam

5. Importance
 It is essential to the overall functionality of a
computer because they allow users to add, edit, or
feed a new set of data or instructions to the
computer.
 It enable users to interact with the computer by
either inputting numerals, characters, or gaming
instructions into the computer.
 It read the user data and instructions and transform
them to equivalent internal binary code understood
by the computer.

6. Advantages
 Enables fast entry of new text into a document.
 Well tried technology and well known method of
entry.
 Most people find them easy to use.
 Easy to do verification check as data is entered, as it
appears on the screen simultaneously.
 Some others are –
o Speed up the data collection.
o Reduction of errors.
o Combine the data as a transaction.

7. Disadvantages
 Wireless input devices have higher input delay than most
wired devices.
 It use up valuable desk space.
 Some like mouse are difficult to use when there is no flat
surface.
 Sometimes, sensors don’t give exact values if the sensor
is faulty or due to some external and internal effects.
 Some others are such as without input devices,
o Computers are not able to receive information.
o Computers remain useless.
o Task performance will be difficult.

8. Conclusion
 Input device is a part of computer hardware.
 It allows user to enter and give instruction to be able
in process into the computer system.
 It gets the data from the users and send it to the
computer. It is controlled by the computers.

9. THANK YOU