Information And Communication Technology: Notes on Input & Output Devices For UGC NET Exam

By Mohit Choudhary|Updated : June 20th, 2022

UGC NET Exam is conducted twice a year by NTA. There are ten units in Paper-1 and each unit has equal weightage in the examination. Most Important Topics in UGC NET Environment, Logical Reasoning, Teaching Aptitude, Research Aptitude, Communication, ICT, Higher Education.

Dear Aspirant,

As you know Information and Communication Technology is a very important section to get a good score for UGC NET Exam 2022. Today we are covering the study material on Input & Output, that will help you succeed in the upcoming exam.

Input Devices

Input Devices: This unit makes the link between user and computer. The input devices translate the information into the form understandable by the computer.

  • Keyboard: The most common and very popular input device which helps in inputting data to the computer.
  • Mouse: Mouse is the most popular pointing device and cursor-control device having a small palm size box with a round ball at its base which senses the movement of a mouse and sends corresponding signals to CPU when the mouse buttons are pressed.
  • Joy Stick: To move cursor position on a monitor screen. It is mainly used in Computer Aided Designing (CAD) and playing computer games.
  • Light pen: It is used to select a displayed menu item or draw pictures on the monitor screen.
  • Track Ball: Mostly used in notebook or laptop computer, instead of a mouse . This is a ball which is half inserted and by moving fingers on the ball, the pointer can be moved.
  • Scanner: A scanner allows you to scan printed material and convert it into a file format that may be used within the Personal Computer.
  • Digitizer: It converts analog information into digital form.
  • Microphone: Microphone is an input device to input sound that is then stored in digital form.
  • Magnetic Ink Character Recognition (MICR): MICR input device is generally used in banks because of a large number of a cheque to be processed every day.
  • Optical character recognition (OCR): OCR converts a scanned image into text.

Output Devices

Output Devices: Output devices translate the computer's output into the form understandable by users.

(a). Monitors: Monitors, commonly called as Visual Display Unit (VDU) are the main output device of a computer. It forms images from tiny dots, called pixels that are arranged in a rectangular form. The sharpness of the image depends upon the number of pixels.

  • There are two kinds of viewing screen used for monitors.
  • Cathode-Ray Tube (CRT): The CRT display is made up of small picture elements called pixels. The smaller the pixels, the better the image clarity, or resolution
  • Flat- Panel Display: The flat-panel display refers to a class of video devices that have reduced volume, weight and power requirement in comparison to the CRT.

(b). Printers: Printer is an output device, which is used to print information on paper.

  • Impact Printers: The impact printers print the characters by striking them on the ribbon which is then pressed on the paper.
  • Non-Impact Printers: Non-impact printers print the characters without using ribbon. These printers print a complete page at a time so they are also called as Page Printers. Laser Printers, Inkjet Printers.

We hope this article will help you out to understand the output and input devices for the UGC NET exam.

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All the best!
Team BYJU'S Exam Prep!


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