Input & Output Devices

Input & Output Devices 

What is Input?

 *Input is any data and instruction entered to the memory of computer .

What are Input devices?
 *Any hardware that allows users to enter data and instruction into a computer .
Example of input devices :-

1. Keyboard : There are 3 types of keyboard - Desktop computer keyboard 
                                                              - Keyboard for mobile devices
                                                              - Keyboard ergonomics   

Keyboard ergonomic

2. Pointing devices : eg. mouse , trackball , touchpad , poiting stick

                   

Trackball

Touchpad 

3. Scanner and reading devices : eg. Optical mark recognition (read hand-drawn mark)

                                                        Bar code reader/bar code scanner

                                                        RFID reader (reads information on the tag via radio waves)

                                                        

4. Biometric input : eg. Fingerprint reader , Retinal scanner , Face recognition system

What is Output?

 *Output is data that has been processed into a useful form

What are Output devices?
 *Any hardware that conveys information to one or more people
Example of output device :-

1. Display devices : eg. LCD monitor , Widescreen , CRT monitor , Television

CRT monitor

LCD monitor

2. Printer : eg. Ink-jet printer , dot-matrix printer , photo printer , laser printer , thermal printer

Thermal printer

3. Speckers , headphones and earbuds

4. Data projectors

5. Interactive whiteboard

^__^ TQ