input devices

1. INFORMATION TECHNOLOGY
INPUT DEVICES
Shenel McCarthy
Subject: Information Technology
Topic: Input Devices
Grade: 7s
What is an Input Devices?
Any hardware component that allows you to enter data, programs, commands, and user
responses into a computer
Input devices can be classified in two (2) categories:
Manual input devices are those devices that require one to physically operate them in
some manner in order to input data.
Automated input device are methods of capturing and entering data directly to the
computer without the intervention of the user.
MANUAL INPUT DEVICES
MOUSE
The mouse is an input device designed to manipulate objects on the computer
screen.

2. INFORMATION TECHNOLOGY
INPUT DEVICES
Shenel McCarthy
TYPES OF MOUSE
A Mechanical mouse has a rubber ball on its underside to detect
movement of the mouse.
An optical mouse uses devices that emit and sense light to detect the
mouse's movement
A cordless mouse transmits data using wireless technology such as
radio waves or infrared light waves
TRACK BALL
A trackball is a pointing device consisting of a ball housed in a
socket containing sensors to detect rotation of the ball.

3. INFORMATION TECHNOLOGY
INPUT DEVICES
Shenel McCarthy
KEYBOARD
A keyboard contains keys that allow a user to enter data and
instructions into the computer.
SCANNER
A scanner is a light-sensing input device that converts printed text &
graphics into a digital form that can be processed by the computer.

4. INFORMATION TECHNOLOGY
INPUT DEVICES
Shenel McCarthy
TYPES OF SCANNER:
Sheet
Feed
Scanner
Handheld
Scanner
Flatbed
Scanner

5. INFORMATION TECHNOLOGY
INPUT DEVICES
Shenel McCarthy
Automated input devices
BARCODE READER
A
barcode reader is a computer peripheral for reading
barcodes printed on various surfaces.
Magnetic Ink Character Reader (MICR)
This enables special characters printed in magnetic ink to be read
and input rapidly to a computer
Optical Mark Reader
The is a device that "reads" pencil marks on compatible scan forms
such as surveys or test answer forms.
Optical Character Recognition
This is computer software designed to translate images of handwritten
or typewritten text into machine-editable text, or to translate pictures
of characters into a standard encoding scheme representing them