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What is an Output Device? – List of Output Devices in Computer

August 18, 2022

Output devices are used to display the Processed information.

The processed data that is given to the user is known as the output. The computer gives us output as a result of any input given to it. This output is given to us through output devices.

Output devices

These are the devices that give the output or information after the processing of the data (taken by input devices) known as the output devices.

After the processing of the data, the computer gives us information.


A few examples of output are given below:

Monitor, speaker, Printer, etc.


The speaker is an output device. The output of the speaker is in the form of audio.

The output of the speaker is also known as the “softcopy output”. This output cannot be touched by the user.

Speakers are devices that convert electrical signals to sound waves. Speakers are commonly used in computers, televisions, radios, stereo systems, and many other electronic devices. There are two types of speakers: dynamic speakers and passive speakers.

image showing the speakers

Dynamic speakers use moving parts to create sound waves. Passive speakers do not have any moving parts.

There are two types of speakers:

  • Internal speaker.
  • External speaker.

Internal speakers

The speakers that are present inside the system unit are known as internal speakers.

External Speakers

The speakers that are present outside the system unit are known as external speakers.


Monitors are electronic devices that display images on a flat screen. These screens have become increasingly popular over the years due to their portability, affordability, and ease of use. Today’s computer monitors are much smaller than those of yesteryear, and they are now able to produce high-quality color images.

image showing the output device monitor

Types of monitor

CRT (Cathode Ray tube)

LCD (Liquid Crystal Display)

LED (Liquid Emitting Diode)

OLED (Organic Light Emitting Diode)

Plasma Monitor


  • LCD stands for “liquid crystal Display”
  • Today, the most commonly used output is LCD.
  • LCD gives output by displaying images, videos, and graphics to the users through the screen.
  • The output of the LCD is also a “soft copy output” which cannot be touched by the user.
  • LCD is available in different sizes.


18 to 24 inches.

  • The size of the LCD is measured diagonally.
  • Different LCDs have different resolution that measures the quality of the LCD. Resolution means dot per inch. The resolution of LCD is 1280 × 768.

CRT (Cathode Ray tube)

CRT stands for cathode ray tube. CRTs were commonly used as monitors in desktop computers until LCD screens came out. In the past, they were the only choice for monitors.

CRTs still exist today, but only in specialty applications.

LED (Light Emitting Diode)

LED stands for Light Emitting Diode. These days, LEDs are used to illuminate small items. You might see these in decorative lighting. LEDs produce much less heat than fluorescent lights do.

OLED (Organic Light Emitting Diode Display)

OLED stands for Organic Light Emitting Diode Display. OLEDs are similar to LEDs, except they emit their own light. Because they don’t need much power, they can be extremely thin and flexible.

Plasma screen

Plasma stands for Plasma Display Panel. Plasma panels are used mainly in television sets. They are similar to CRTs, except they use gas instead of electricity to create images. Since they use gases, they work at higher temperatures.


 The output device that is used for printing documents is known as a printer.

  • It generates an output on paper.
  • It generates output by printing graphics, numbers, characters, and symbols.
  • The output of the printer is known as “hard copy output”. We can touch this output.
  • The quality of the printer is measured by its resolution which is a dot per inch.

Types of printers:

Impact printers

 The type of printer that works by the direct contact of an ink ribbon with paper. This is the oldest type of printer but is also used today because of its unique functioning. The mechanism of the impact printer resembles a typewriter.


Wheel printer, line printer.

Non-impact printer

It is a type of printer that is the opposite of an impact printer. Like an impact printer, it doesn’t hit or impact a ribbon to print. It uses laser and chemical technologies to work. They require less maintenance or repair than impact printers.


Laser printers, inkjet printers.


A projector is a type of projection system that uses a high-powered lamp to generate light. Light from the lamp passes through a series of lenses, color filters, mirrors, and/or reflectors to create images on a screen.

image showing the projector

A projector works by projecting an image onto a surface such as a wall, ceiling, or screen. There are two types of projectors: Digital projectors and Analog projectors.

Benefits of projectors

  • Projector screens are so versatile – you can use them both indoors and out! If you want to watch a movie al fresco style, set up your projector screen on your patio or balcony. But if you’re looking to have a game night at home with friends, you can place the projector screen over your television for an immersive experience.
  • Projector screens are versatile. You can use them indoors or out, and they work well in both environments. If you want to watch a movie outside, you can set up a projector screen on your patio or balcony. If you’re looking to watch a game at home, you can place a projector screen over your television.
  • Projector screens are affordable. You don’t need to spend a lot of money to get a quality projector screen.
  •  Projector screens are great for any type of home entertainment system. A projector screen is a great addition to any room and provides a clean look that doesn’t distract from the rest of the decor.

List of Output Devices of Computer

What is a Monitor in a Computer?-Types of MonitorDifference Between LCD and CRT
What is Printer? | Different Types of PrintersDifference between Impact printer and Non-impact printer

Related FAQs

What are output devices?

Output devices are used to display the output to the user.  There are a number of output devices that display output in different ways such as text, images, hard copies, and audio or video.

What are 3 examples of outputs?

·       Monitor.
·       Printer.
·       Projector.
·       Video Card.
·       GPS.
·       Speaker/Headphones.

Is the CPU an output device?

CPU is a processing device. It’s neither an input nor an output device. It is used for processing.

What are the 5 types of monitors?

CRT (Cathode Ray tube)
LCD (Liquid Crystal Display)
LED (Liquid Emitting Diode)
OLED (Organic Light Emitting Diode)
Plasma Monitor

What is the speaker explain?

The speaker is an output device that is used to display the audio. Speakers can also be a device that amplifies sound, such as a radio or amplifier. You can also use a speaker to send music to different rooms of your home or from room to room in a hotel or a hospital.