INPUT DEVICES

                                                       

                                                      INPUT DEVICES

Input is any data or instruction that you enter into the memory of a computer.
There are four types of input: which are text, graphic, audio & video.

INPUT DEVICES

Input devices are any electronic device connected to a computer and produces input signals.


a) INPUT DEVICES FOR TEXTS              

An optical reader is a device that uses a light source to read characters, marks and codes and then converts them into digital data that a computer can process.

KEYBOARD

b) INPUT DEVICES FOR GRAPHICS

SCANNER

captures images from photographic prints, posters, magazine pages and similar sources for computer editing and display.

DIGITAL CAMERA

allows you to take pictures and store the photographed images digitally.

c) INPUT DEVICES FOR AUDIO

MICROPHONE

Audio input is the speech, music and sound effects entered into the computer. This can be done using input devices such as a microphone and digital musical instruments like the Musical Instrument Digital Interface (MIDI) keyboard.

d) INPUT DEVICES FOR VIDEO

Video input is input of motion images captured into the computer by special input devices.


e) POINTING DEVICES

TOUCH SCREEN

                                                                     

A pointing device is another form of input device. Pointing devices such as a mouse, trackball, graphics tablet and touch screen are used to input spatial data into the computer.

INPUT DEVICES

Identify the input devices used for text, graphic,audio and video

· INPUT DEVICES

Any hardware component that allows users to enter

data and instruction into a computer

TYPES OF INPUT	EXAMPLE OF INPUT DEVICES
Text	Keyboard, barcode reader
Graphics	Digital camera, scanner, graphic tablet
Audio	Microphone, MIDI keyboard, digital voice recorder pen
Video	Digital video camera, webcam, CCTV