What is input device?

input devices

In computing, an input device is a piece of equipment used to provide data and control signals to an information processing system, such as a computer or information appliance. Examples of input devices include keyboards, computer mice, scanners, cameras, joysticks, and microphones.

A portion of the famous input devices  are:

  • Kayboard
  • Mouse
  • Scanner
  • Joystick
  • Light Pen
  • Digitizer
  • Mouthpiece
  • Attractive Ink Character Acknowledgment (MICR)
  • Optical Person Peruser (OCR)
  • Advanced Camera
  • Paddle
  • Guiding Wheel
  • Motion acknowledgment devices
  • Light Firearm
  • Contact Cushion
  • Remote
  • Contact screen
  • VR
  • Webcam
  • Biometric G



Kayboard is the most well-known and exceptionally famous info gadget which assists with contributing information to the PC. The design of the console is like that of conventional typewriter, in spite of the fact that there are some extra keys accommodated carrying out extra roles.

Kayboard are of two sizes 84 keys or 101/102 keys, yet presently consoles with 104 keys or 108 keys are like wise accessible for Windows and Web.

The keys on the keyboard are as follows −

1Composing Keys

The letter keys (A-Z) and digit keys (09) give the very format as that of typewriters.

2Numeric Keypad

Entering the numeric information or cursor movement is utilized. A bunch of 17 keys spread out in a similar setup used by most calculators and number crunchers.

3Capability Keys

The twelve capability keys are available on the console which are organized in succession at the highest point of the console. Each capability key has an interesting importance and is utilized for some particular reason.

4Control keys

These keys give cursor and screen control. It incorporates four directional bolt keys. Control keys additionally incorporate Home, End, Supplement, Erase, Page Up, Page Down, Control(Ctrl), Alternate(Alt), Escape(Esc).

5Unique Reason Keys

Console likewise contains some particular reason keys, for example, Enter, Shift, Covers Lock, Num Lock, Space bar, Tab, and Print Screen.

Mouse is the most famous pointing gadget. This device, with its little palm-size box and round ball base, is extremely well known as a cursor-control device. which detects the development of the mouse and conveys relating messages to the computer chip when the mouse buttons are squeezed.

It has two buttons called the left and the right button and a wheel is available between the buttons. A mouse is used to control the cursor’s position on the screen, but it cannot be used to enter text into the computer.


Joystick is likewise a pointing gadget, which is utilized to move the cursor position on a screen. It is a stick having a circular ball at its both lower and upper finishes. The lower round ball moves in an attachment. The joystick can be moved in each of the four headings.


The capability of the joystick is like that of a mouse. It is essentially utilized in PC Supported Planning (computer aided design) and playing PC games.

Bar Code Readers

This device used for reading (data in the form of light and dark lines). It is generally used in labelling goods, numbering the books, etc. It may be a handheld scanner or may be embedded in a stationary scanner.

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.


Scanner is an input device, which works more like a photocopy machine. It is used when some information is available on paper and it is to be transferred to the hard disk of the computer for further manipulation.

Scanner captures images from the source which are then converted into a digital form that can be stored on the disk. These images can be edited before printed.

Screens, generally called as Visual Presentation Unit (VDU), are the principal yield gadget of a PC. Pictures are structured from small rectangular units called pixels, which are organized in a rectangular structure. The sharpness of the picture relies on the quantity of pixels.


Printer is an output device, which is used to print information on paper.




Be the first to comment

Leave a Reply

Your email address will not be published.