1st Class Computers Science Computer Components

 

Computer Components

 

Introduction

Computer components are the devices which help computer to work properly. Computer Devices can be classified into following four parts:

2. Input Devices

2. Storage Devices

3. Processor

4. Output Devices

 

 

 

Input Devices

Input devices allow the user to enter information into the system.

Some input devices are:

Mouse

Mouse is a pointing device. It has two click buttons and one scroll wheel. It is used to manipulate object on a computer screen.

 

 

 

Keyboard

Keyboard is a set of keys that enables you to enter data into a computer.

 

 

Joystick

Joystick is a control device that enables a user to move an object on the screen and is mainly used for playing video games.

 

 

 

Light Pen

It is a hand held light sensitive input device used for drawing on the computer screen.

 

 

Barcode Reader

Barcode reader is an input device used for scanning the information printed on the product in the form of barcode.

 

 

 

Web camera

A webcam is a video camera that captures image in real time through a computer network.

 

 

Microphone

Microphone is used to record your voice into the computer.

 

 

 

Touch screen

Touch screen allows the user to interact with a computer by using their fingers.

 

 

 

Storage devices

A storage device is used for storing information. It can hold information both temporarily and permanently.

 

 

Some Storage devices are:

 

 

Processing Device

CPU is the main unit of a computer for the data processing. It is also known as the brain of computer system that carries out the processing of the given data and provides the output.

 

 

 

Output Devices

An output device is any device used to send data from a computer to another device.

Some output devices are

Monitor

Monitor is used to display the result processed by the computer. Monitors are classified into 3 types.   

 

1. Cathode Ray Tube (CRT)                              

 

 

2. Liquid Crystal Display (LCD)                       

 

 

3. Light Emitting (LED)                                    

 

 

Printer

Printer is the output device which is used for printing the text and images.

 

 

 

Speaker

Speaker is an electronic output device which is used to hear the sound using a computer.

 

 

Things to Remember

 

• Computer components are of four types Input device, Output device, Processing unit and Storage device.
• Mouse, Keyboard, Joystick, Light Pen, Microphone, Web camera, Touch screen are the examples of input devices.
• Hard disk, Pen drive, CD, DVD are some of the storage devices.
• CPU is the processing unit of a computer.
• Monitor, Printer and Speaker are some of the Output devices.

 

Answer Me

 

        1.  Write the names of the images.

 

 

        2. Tick ( √ ) the input device.

 

 

       3.    Tick ( √ ) the output device.