Input Devices: The Devices through which we enter data and instructions are called input devices. The Keyboard is basic input device and other input devices include trackball mouse and light pen which do not require typing to input data. These are Called Pointing Devices. We Can Select any item on the Screen by pointing and clicking on it.
Common Input Devices
KEYBOARD
A Keyboard is a most common input device that is use to give inputs and instructions to the computer by typing. A slandered Keyboard has 104 keys which can divided into five groups as: Alphabet keys (A to Z), Numeric keys (0 to 9), Function Keys (F1 to F12), Navigation Keys (Arrow keys, Home, End, Page Up, Page Down etc.) and Control Keys (Esc, Ctrl, Alt and Window keys)
MOUSE
A Mouse is an pointing device handling by hand which have two or three buttons on its top. It is used to control pointer movement on the computer screen. It is also used to select or point any object or file, It also used to open file or folder. It is very helpful to draw picture.
LIGHT PEN
A Light Pent is like a pen, it is a pointing device. Basically it used with CRT monitors to select objects on the display Screen. We can draw any object by it on the Computer Screen directly. It makes our work easier. It is basically used by fashion designers, engineers and architects.
SCANNER
It is a device that reads Gaffs, Images and Text from the Printed paper and convert it into digital (Computer Readable) form. It has a flat tray with the a glass pane and a covering lid.
DIGITAL CAMERA
Digital Camera is a camera like old traditional camera but it has some new features as it has a chip to store images or videos data and it has batter quality then traditional camera. It has a chargeable battery and a data cable for transfer data to Computer.
WEB CAMERA
It is also an input device of computer. It is a camera but it has more latest features as it works online, it records images and videos and shows live. It mainly used to live chat with our friends, relatives or office use.
A Microphone is an Electronic input device that is used to record voice, music or sound and save in to the computer.
The Sound card is responsible for record sound by the microphone and save in to the computer. It used in many other electronic devices (as Tap Recorder, Telephones to capture or record sound.
TOUCH PAD
Touch Pad is an input device that is used in Laptops in place of mouse. It is a Touch sensitive pad. You can move your mouse pointer on the screen by moving your finger on the touch pad.
TOUCH SCREEN
Touch Screen of Computer or mobile is like a input device. We can open or select any object by touch by finger directly on the screen, e.g. ATM machine, Mobile Phones, etc.
Joystick is an entertaining device. It is used to play Games on the Computer. We operate games by it. It has a handle to move objects as you require.
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