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Modern Input Devices
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Scanner
There are 2 types of scanner:
Flat bed scanner
Scanner is an input device used to insert a picture into the computer. This is a peripheral device that converts a printed image into digital information.
Hnad Held scanner
KEYBOARD
Bar Code Reader
It is most commonly used input device.It is used to input data written form. Keyboard is merely a collection of momentary switches.
Normal Keyboard
A normal keyboard has 101-104 keys which are distributed in 5 categories.
Function keys
F1 to F12
Alphanumeric keys
A-Z 0-9 a-z
Special keys
ALT CTRL HOME END ETC.
Joystick
Types of Input devices
NUMERIC KEYPAD
0-9 + - * / @
Keyboard
Joystick is a pointing device mostly used for playing games. This is a device used to control the actions in a computer game.
Mouse
Joystick
Joystick
Touch screen
It consst of a lever used to move the pointer on the sceen and buttons used to select options.
Microphone
Scanner
MOUSE
Touch Screen
It is a pointing device used to insert instructions into the computers. It is a hand held device that controls the pointer on the screen. It has two buttons viz. left button , right button , one scrolling wheel. With the help of mouse you can draw images, select options, move text, images.
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Multimedia keyboard
Introduction
Introduction
Computer can"t understanding our language because it understands only machine language and it can be possible using some devices are called Input devices.
Multimedia keyboard has some additional keys to operate multimedia operations like volume up,volume down,play,pause,stop etc.
When we work with computer we need to enter data and instructions to the computer using these devices.
Types of Input devices
These devices convert data and instructions to a form that can be recognized by the computer.
MOUSE
2 tYPES OF MOUE:
Touch Screen
tRADITIONAL mOUSE
Microphone
Touch screen is the easiest way to data input into computer. Touch screen allows the user to select the item by touching the screen at appropriate spot. It has another feature that the user's finger become the input device to operate touch screen.
OPTICAL MOUSE
Microphone is a input device used to inputting
the voice signal into the computer. Microphones are commonly used for live chat. Microphones are also used to record voice into the computer.