What is Input device easy language definition with example?
What is Input device easy explain word
An input device is any device that provides input to a computer. There are dozens of possible input devices, but the two most common ones are a keyboard and mouse.
Some input device name it which are used in computer system.
1. Keyboard
The keyboard is a basic input device that is used to enter data into a computer by
pressing keys.
It has different sets of keys for letters, numbers, characters, and functions.
Keyboards are of two sizes 84 keys or 101/102 keys, but now keyboards with 104
keys or 108 keys are also available.
Types of keyboards:
1. QWERTY Keyboard:
It is the most commonly used keyboard with computers in modern times.
It is named after the first six letters of the top row of buttons.
Keyboard continues…
Types of keyboards:
2. AZERTY Keyboard:
It is considered the standard French keyboard.
It is developed in France.
Its name is derived from the first six letters that appear on the top left row of the
keyboard.
The Q and W keys in AZERTY keyboard are interchanged with A and Z keys in
2.MOUSE
Mouse is the most popular pointing device.
Mouse is a input device that controls a cursor in a GUI (graphical user interface)
and can move and select text, icons, files, and folders on our computer.
It has two buttons called the left and the right button and a wheel is present
between the buttons.
A mouse can be used to control the position of the cursor on the screen, but it
cannot be used to enter text into the computer.
3.JOYSTICK
Joystick is also a pointing device, which is used to move the cursor position on a
monitor screen.
It is a stick having a spherical ball at its both lower and upper ends.
The lower spherical ball moves in a socket.
The joystick can be moved in all four directions.
The function of the joystick is similar to that of a mouse. It is mainly used in
playing computer games.
4.LIGHT PEN
Light pen is a pointing device similar to a pen.
It is used to select a displayed menu item or draw pictures on the monitor screen.
5. SCANNER
Scanner is an input device, which works more like a photocopy machine.
The scanner uses the pictures and pages of text as input.
It scans the picture or a document. The scanned picture or document then
converted into a digital format or file and is displayed on the screen as an output.
6. BCR(Bar Code Readers)
Bar Code Reader is a device used for reading bar coded data (data in the form of
light and dark lines).
Bar coded data is generally used in labelling goods, numbering the books, etc.
Bar Code Reader scans a bar code image, converts it into an alphanumeric value,
which is then fed to the computer that the bar code reader is connected to.
7. MICROPHONE
The microphone is a computer input device that is used to input the sound.
It receives the sound vibrations and converts them into audio signals or sends to a
recording medium.
8. Optical Mark Reader (OMR)
OMR is a special type of optical scanner used to recognize the type of mark made
by pen or pencil.
It is used where one out of a few alternatives is to be selected and marked.
It is specially used for checking the answer sheets of examinations having multiple
choice questions.
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By Shailesh Jaiswal
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