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am going to tell about what is computer hardware and what is the difference between hardware and software. If you do not know about the history and operating system of your computer, then we have written a post. You can see him too. 

What is computer hardware

Computer hardware includes the physical parts of a computer, such as the central processing unit (CPU), monitor, mouse, keyboard, computer data storage, graphics card, sound card, speakers, and motherboard.

The parts of the computer that we can see and touch are called hardware. All the hardware together make up the complete computer. Without these hardware the computer is of no use. 

Software performs the task of giving commands and output to these hardware. Both software and hardware are important parts of a computer. A computer is incomplete without either of these two. 

types of computer systems

personal computer

Personal computers are one of the most common types of computers due to their versatility and relatively low cost. A desktop personal computer consists of a monitor, a keyboard, a mouse, and a computer case. The computer case contains the motherboard, fixed or removable disk drives for data storage, power supplies, and may contain other peripheral devices such as modems or network interfaces. 

computer case

A computer case, also known as a computer system unit, is the enclosure that contains most of the components of a personal computer (usually except the display, keyboard, and mouse). It is typically constructed from steel, aluminum and plastic.

power supply

The power supply unit (PSU) converts alternating current (AC) electric power into low-voltage direct current (DC) power for the computer. Laptops can run on built-in rechargeable batteries. PSUs typically use switched-mode power supplies (SMPS), which use metal-oxide-semiconductor field-effect transistors to power the SMPS’s converters and regulator circuits.


Motherboard is the main component of the computer. It is a board with integrated circuitry that connects other parts of the computer including the CPU, RAM, disk drives (CD, DVD, hard disk) as well as any peripherals connected via expansion slots. IC chips in computers typically contain billions of tiny metal-oxide-semiconductor field-effect transistors.

Expansion cards

In computing, an expansion card is a printed circuit board that can be inserted into a computer motherboard to extend functionality to a computer system. Expansion cards can be used to gain or expand other facilities.

Storage devices

A storage device is any computing hardware and digital media that is used to store, port, and extract data files. It can hold and store information, both temporary and permanent, and can be internal or external to a computer, server or any similar computing device. Data storage is a main function and fundamental component of a computer.

Fixed media

Data is stored by computers using different types of media. Hard disk drives are found in almost all older computers due to their higher capacity and lower cost, but solid-state drives (SSDs) are faster and more power efficient. Currently, the use of SSD flash memory is high.

Removable media

To transfer data between computers, an external flash memory device (such as a memory card or USB flash drive) or optical disc can be used. Most machines have an optical disc drive (ODD), and virtually all have at least one Universal Serial Bus (USB) port.

Input and output peripherals

Input and output devices are usually connected to the main computer and placed externally. 

Input devices allow the user to enter information into a system or control its operation. Most personal computers have a mouse and keyboard, but laptop systems typically use a touchpad instead of a mouse. Other input devices include webcams, microphones, joysticks, and image scanners.

Output devices are designed around the human senses. For example, monitors that can be read, speakers produce sound that can be heard. Such devices may also include a printer or a Braille embosser.

Mainframe computer

A mainframe computer is a very large computer that usually occupies a room and can cost several hundred or even thousands of times more than a personal computer. They are designed for governments and large enterprises to perform large numbers of calculations.

Departmental computing

In the 1960s and 1970s, inexpensive systems began to be used for process control and laboratory automation. Minicomputers, or colloquially called a class of small computers, were developed in the mid-1960s. 


Supercomputers are a class of extremely powerful computers. The term is generally applied to the fastest high-performance systems available at any given time. Such computers have been used primarily for scientific and engineering tasks that require extremely high speed calculations.

hardware functions 

All hardware has different functions, such as monitor function, which is the function of monitor to show the commands given to the computer. The user gives orders to the computer with the mouse. What program should they run? After that the computer processes the output and shows it. Similarly, cpu processes the given command and shows the result. CPU is called the brain of the computer. 

All hardware has different functions, using which we are able to do any work. 

types of computer hardware 

There are three types of computers. 1 system unit 2 input device 3 output device 

System Unit –  It is like a box inside which there are many devices which are connected to all the equipment. It is called cpu in simple language.

Input devices –  These are the devices that transmit commands to the computer such as – mouse keyboard. After which the cpu sees the output as per the command.

Output device – The  result is displayed by the computer by doing some processing, the device in which the result is visible is called output device. Examples of output devices are monitors, printers, speakers, etc.

difference between software and hardware 

If we talk about software, it is the opposite, software is a set of instructions that can be stored and run by the hardware. It is called hardware because it is hard, whereas software is “soft” and it is stored in the hardware. 

Hardware is usually directed by software to execute any command or instruction. The combination of hardware and software makes a computing system.

  1. Software is virtual that can be seen but touched while hardware can be seen and touched. 
  2. Hardware processes the given task whereas software gives instructions to the hardware. 
  3. Hardware is the external part of the computer whereas software is installed in the hardware. 
  4. Software is a program that is created through coding while hardware is a machine, it is made by material. 
  5. Hardware – cpu monitor keyboard mouse printer speaker These are examples of hardware whereas software are examples of software like Microsoft Windows, Photoshop, Media Player etc.     

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