Components of Computer

Computers have become one of the most important things we need in our lives, especially in this time… The post Components of Computer appeared first on Leverage Edu.

Components of Computer

Components of COmputer (1)

Computers have become one of the most important things we need in our lives, especially in this time of the pandemic when everything turned online from classes to payments to board meetings and everything else. When computers are so important to us should we not know more about them? So we have brought you information about the different components of computer.


First of all, we should know what computers are to know more about them. A computer is a machine that is made up of various parts or components which help it in carrying out instructions which are in the form of arithmetic commands or different algorithms for it to process. Computers are used in almost every field like medicine, travel, education, entertainment, etc.  It has made our work way easier than ever before.

Credits: Clipart Library

Components of Computer

The main things that comprise a computer are – motherboard, CPU, GPU, RAM and Hard disk drive for the storage of all the data.  We will discuss all these components of the computer in detail below:



A motherboard is a circuit board through which all the different components of a computer communications and it keeps everything together. The input and output devices are plugged into the motherboard for function.

Courtesy: Times of India

Input Unit

Computers respond to commands given to them in the form of numbers, alphabets, images etc. through input units or devices like – keyboard, joystick etc. These inputs are then processed and converted to computer language and then the response is the output in the language that we understand or the one we have programmed the computer with.

Credits: Medium

Output Unit

The result of the command we provide the computer with through the input device is called the output. The most used is the monitor since we give commands using the keyboard and after the processing, the result or outcome is displayed on the monitor.

Courtesy: Medium

Central Processing Unit (CPU)

The CPU is called the brain of the computer since no action can take place without its permission and execution as the main processing unit. It communicates with all the other components of the computer and has 3 components that help in the smooth functioning of the CPU. Components of the CPU are:


Memory Unit

The information entered through the input devices is saved in the memory of the CPU and then passed on to the other parts. Similarly, when the output is ready it is saved in the memory before the result is given to the user.  

Control Unit

This unit controls the functioning component of the computer. It collects the data entered, leads it on for processing after the processing is done, receives the output and provides it to the user. So getting instructions, decoding it, signalling the execution and receiving the output is done by the control centre and hence it is called the centre of all processing actions that happen in the computer.  

Arithmetic and Logical Unit

This unit does mathematical calculations, arithmetic operations, comparison of data and decision making. It has circuits that are built for addition, subtraction, multiplication, division and other calculations.

Graphics Processing Unit (GPU)

Another vital component of the computer is GPU. The Graphics Processing Unit or the video card helps generate high-end visuals like the ones in video games. Good graphics like these are also helpful for people who have to execute their work through images like 3D modellers and others who use resource-intensive software. It generally communicates directly with the monitor.

Credits: YouTube

Random Access Memory (RAM)

RAM is the most commonly referred component in a computer. The RAM is also known as the volatile memory since it gets erased every time the computer restarts. It stores the data regarding the programs which are frequently accessed programs and processes. It helps programs to start up and close quickly. It being slower has made it more obsolete these days.


Storage Unit

The computers need to store all their data and they have either a Hard Disk Drive (HDD) or a Solid State Drive (SDD) for this purpose. Hard disk drives are disks that store data and this data is read by a mechanical arm. Solid-State drives are like SIM cards in mobile phones. They have no moving parts and are faster than hard drives. There is no need for a mechanical arm to find data on a physical location on the drive and therefore this takes no time at all.  

Credits: DigitalThinkerHelp

Components of Computer PPT

Courtesy: Beth Sockman

Components of Computer MCQs

1. A computer is a motorized device that processes output into an input.

A. True 

B. False 

2. What does CPU mean?

A. Control Processing Unit

B. Central Protocol Unit

C. Central Processing Unit

D. Control Produce Unity

3. A memory is consist of electronic components that store instructions waiting to be executed.

A. True

B. False

4. Which is an output device?

A. Keyboard

B. Mouse

C. Printer

D. All of the above

5. Floppy disk provides greater storage capacity than a hard disk.

A. True

B. False

6. Which of the following is an advantage in using computers?

A. Privacy Risk

B. Communication

C. Impact on labour force

D. Health Risk

E. All of the above

7. What does CD mean?

A. Create disc

B. Control disc

C. Compact disc

D. Command disc

8. Which of the following is the BRAIN of the computer?


B. Motherboard 

C. Pendrive 

D. Screen 

9. Computer provides solutions to problems. It makes our work a lot easier and more convenient. With this, people can communicate with other people easily. Computers DO NOT HAVE disadvantages.

A. True

B. False

10. Compact discs (CDs) provide lesser storage capacity than Digital Versatile Discs (DVDs).

A. True

B. False


What are the components of a computer system?

The components are given and explained in detail above. You can read about them above. Hope it helps.

What are the two types of software?

The types of software are systems, application and programming software.

What is a component?

A component is an important constituent part of anything. In this case, parts or components of a computer are described above.

What are the main components of a CPU?

The 3 main components of the CPU are the memory unit, control unit and arithmetic and logical unit. This was all about the components of a computer.

We hope that this blog has made you understand all the different components of computer. For more such educational and interesting reads, stay tuned with Leverage Edu and connect with us on Instagram, Facebook, Twitter and LinkedIn.

The post Components of Computer appeared first on Leverage Edu.