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Examples Input and Output Devices of a Computer System

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What is the name of the input and output devices of a computer? Many people who learn computer, in the beginning, don’t know it. Before we get to the tools, let’s take a look at what a computer is.

The computer is a versatile device, which can process different types of data. We need different kinds of tools to work every day. Different devices use to enter and transfer data to the computer. Input output devices can help get data. For beginners, today, we will discuss the input and output devices of a computer.

Input and Output Devices of a Computer :

Although many people use devices like keyboards, mouse, joysticks, light pens on their computers, many people don’t know what kind of tools they are? Printers, speakers, microphones, graphics cards, etc., also use computers. Do you know what kind of devices are these? Let’s see what the input devices and output devices of a computer are? This information is vital for those who are undergoing basic training.

Input Devices of Computers :

A computer’s input device is a hardware device that sends information to a computer and allows you to use and control it. Some input devices are:

• Keyboard:

The first name that appears on a computer’s input device is the keyboard. Many mechanical switches such as the number and character keys are on the keyboard. This board has a combination of pushbuttons and many more keys. The keyboard connects to the computer via Bluetooth or UCB.

Input and Output Devices of a Computer

• Mouse:

Among the input devices, the mouse is the most popular low-cost pointing device. It is a cursor-control device with a small palm-sized box at the base. This box senses the mouse’s motion and sends a signal to the CPU when the mouse buttons press. The mouse has two buttons on the right and left side and a wheel in the middle. The position of the cursor can easily control with the mouse.

• Microphone:

Usually, a microphone converts sound waves into electrical signals. This signal then converts to digital audio data and sent / input to the computer. Microphones use as computer input devices in many tasks such as voice recording, speech recognition, VoIP, and non-acoustic.

• Bar code reader:

A bar code reader or value screener reader is like any other input device. It scans the bar code on the product and enters it into the computer. Barcode reader, also called price scanner or point-of-sale (POS) scanner.

It is a hand-held or static input device that captures the information contained in the bar code. These scanners connect to the computer via a serial port, keyboard port, or an interface device.

• Graphics Tablet:

Graphics tablet devices are also known as digitizers, drawing tablets, drawing pads, digital drawing tablets, pen tablets, or digital artboards. It is a computer input device through which the user can perform animation and graphics work, including drawing an image. Anyone can draw on this tablet with their hand, much like a pen. A person can draw in these tab like drawing with a pencil and paper.

• Scanner:

A scanner is a device that copies any image or text and creates a digital file on a computer. It works a lot like a photocopy machine. The difference is that it scans anything and inserts it into the hard disk. The scanner connects to the computer via UCB.

list of input devices

• Track Ball:

The trackball uses to enter motion data into a computer. It works a lot like a mouse. However, it has a movable ball at the top. You can roll this ball in any direction you want.

• Joystick:

A joystick is widely known as an input device. It is quite a popular tool for kids to adults for video games. It consists of a base and a stick and can move in any direction.

You can move slowly or fast either to the right or to the left. The joystick provides better service from the keyboard’s key in controlling video games.

• Webcam:

The webcam can capture images on the screen. It is either inside the computer or connected to the computer with the UCB cable.

• Optical Mark Reader (OMR)

Optical Mark Recognition or Optical Mark Reading (OMR) is an input device. Data from document forms such as surveys and tests are captured and entered into the computer system. This OMR is used to read question papers, multiple-choice tests, etc., on the computer.

It is a process of gathering marked optical data from people. After entering the OMR computer, we see the recognized symbols in the document.

• Magnetic Ink Card Reader (MICR):

In bank Magnetic ink card readers use commonly. In the bank, every day more or less checks to transact. The bank uses code numbers and checks numbers to facilitate accounting. These numbers print on checks with a particular type of ink. Moreover, the ink contains particles of magnetic material that can easily read machines.

• Optical Character Reader ( OCR):

Optical Character Reader (OCR) is an input device. Not only reads the printed text, but it also scans the text optically. It converts the characters into machine-readable code. OCR helps save the book in system memory.

Output Devices of Computers:

The device through which the work results obtain from the computer is called the output devices. Some output devices are:

• Monitor:

The monitor is the primary output device of the computer. Monitors are also commonly known as Visual Display Units (VDU). There are different types of monitors in LED, LCD, CRT. This monitor looks like a TV—any information or data, including pictures possible to see on the monitor’s screen.

• Printer:

The device that uses to extract the information from the computer is the printer. It gives the actual output of the data or image floating on the monitor screen. The printer connects to the device via UCB cable.

• Speaker:

Speakers use to listen to music or sound on the computer. As an output device, it comes in different shapes. A pair of speakers connect via USB wire to the computer.

• Projector:

One of the output devices of the computer is projectors. It usually uses for displaying pictures on the big screen. Projectors also use for official presentations or other purposes.

• Headphones:

Headphones connect to the computer with UCB. It allows you to listen to songs or videos without disturbing the people around you. It also works as a type of output device.

computer output devices list

• Computer Output Microfilm (COM):

It is a type of output device used as a photographic film. This device can store many images together by reducing the size.

• Plotters:

You can make construction maps, engineering diagrams, architectural plans and business charts, etc., with plotter devices. Plotters are a type of output device. It comes in handy for making large graphs and hard copies of designs on paper.

examples of input and output devices of A Computer:

Some devices can use as both input and output devices of a computer. Such as-

• Modems:

Modems use as both input and output devices of a computer. It receives and sends information through telephone lines.

• Network Cards:

Network Cards usually work with both input and output devices of a computer. It prepares data, sends, and control the network. The other name of this network cards is a Network Adapter or Network Interface Card ( NIC).

• Touch Screen:

The touchscreen is the top layer of the electronic visual display of a data processing system. It is known as both the input and output devices of a computer.

• Sound Card:

This device is also known as an audio card. It is an internal expansion card that gives input and output audio signals. As a computer audio card, it is known as both an input and output device.


The input and output devices of a computer have a different purpose. The input device directs the work, and the output devices give the primary form of the directed work.

For example, in the computer’s Microsoft Word app, something is written with instructions on the keyboard. Now you can easily extract this writing or data with the help of a printer machine. So we can say that the input and output devices of the computer closely relate to each other.

read more: How to Use Integrated Graphics and GPU

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