What is Computer System and Its Types?| Definition| Merits and Demerits of Computer?


In this blog, we will discuss “Computer systems”, their basic definition, their merits, and demerits and finally, we will discuss their types. So, before starting this blog, let us discuss the word “Computer” and Why Computers are so popular all over the world?

Computer: It is an electronic machine that can store, find and arrange information, calculate amounts, and control other machines are known as “Computers”

Why are Computers so popular all over the world?

As you guys know the Computer is a very popular device all over the world. This is because most of the work is done by the computer, like today we are doing weather forecasting with As you all know that computer is a very popular device all over the world. This is because most of the work is done by computer, like today we are forecasting the weather with the help of computers, scientists are using them for their research, and doctors use it to store all the data of their patients on computers. To keep on. A businessman is using it to manage his stock/inventory, balance sheet, etc., and many other things which are all done with the help of the computer.

Also, take a tour of this article “How Computer Is a Useful device” to know more about their uses…

Now, let’s see the meaning of Computer System


“Basically, a computer system is a combination of hardware and software devices that help computers to receive data or information by communicating with each other. It is a set of integrated devices that accept data (input), Then process it and finally give us a result (output) This is known as the”Computer System”.

The computer system work with the help of the main four basic work ‘INPUT’, ‘OUTPUT’, ‘STORAGE’, and ‘PROCESSING’. These four words define the meaning of Computer systems.

It includes a CPU, monitor, keyboard, mouse, etc, and many other components, etc.

Definition of Computer System?

A computer system is a set of integrated devices that inputting, Processing and outputing the storing data and information is known as “Computer system”

Labeled diagram of Computer System

Merits and Demerits of computer system

There are some Merits and Demerits of “Computer System”


  • Used for multi-tasking
  • It Provides us with to access more information
  • Allows us for better communication and connections
  • It helps us for entertainment like playing games, music, movie, and many other entertainment purposes.
  • It reduces our load of work


  • It is addictive
  • It affects our health like back pain, eyestrain, obesity, etc.
  • Security risks can be created by malware.
  • It gives us a negative impact on our environment
  • Potential for loss of privacy


The computer system is generally classified by its performance, Their performance is judged by the:

  1. The amount of data that can be stored in the memory.
  2. Speed of internal operation of the computer.
  3. Number and types of peripheral devices.
  4. Amount and type of software available for use with the computer.

Their Types are:


Microcomputers are those computers that are commonly used in terms of personal computers. It uses a single processor for its CPU and It is a digital computer system under the control of a stored program that uses a microprocessor which is also known as “Micro-Chips”. This machine has taken the fullest advantage of the use of large-scale integration on Silicon Chips(It is a very small piece of material inside the computer that is used to carry a complicated electronic circuit)

Since 1971 it has made it possible to put a brain into all sorts of machines. The programmable are stored in the processor are, ROM(Read Only Memory) and RAM (Random Access Memory). The ROM defines the instructions to be executed by the computer while RAM defines the functional equivalent of the computer memory.

Nowadays microcomputers are called personal computers. These are small, relatively inexpensive, etc. Mostly Microcomputer is commonly used in Schools, offices, companies, and for personal uses.

Examples of microcomputers: laptops, tablets, mobile phones, PDA(Personal Digital Assistant), etc.


Minicomputers are those computers that possess the features and capabilities of a large computer and it was developed in the mid of 1960s. Minicomputer systems are also known as small mainframe computers which provide faster-operating speeds and larger storage capacities than microcomputers and also, can support a large number of high-speed.

This type of computer system is very flexible and can be improvised to meet the needs of users. Although the minicomputer is not as powerful as the medium or large-size of the computer. which I am going to tell…

Examples of minicomputers: Apple iPad, Samsung tab, Netbook, iPod, etc.

Medium-size computers

Image Credit-https://commons.wikimedia.org

These are those computers that provide faster speed and larger storage capabilities than small Computers(Micro or Minicomputers). These computers can support a large number of high-speed, input-output devices, and several disk drives that can be used to provide online access processing.

The possibility of increasing the data processing and capability of the computer by adding devices, such as adding the memory.

Example of a medium-sized computer: IBM’s Power Systems.


large computers are those computers that have the ultimate in flexibility and speed. These computers usually contain full control of the systems with minimal operator intervention.

Large computer systems range from single processing configurations to nationwide computer-based networks involving general large computers. In large computers, it has an internal operating speed which is measured in terms of nanoseconds as compared to the smaller computers where speed is in terms of microseconds.

Examples of large-size computers: Supercomputers and Mainframe computers.


Image Credit: en.wikipedia.org

Mainframe computers are huge and multi-user systems that are designed to process the millions of instructions of this computer per second and are capable of accessing billions of data. This is a combination of RAM and many processors and acts as a central processing unit for many workstations.

This computer is commonly used in big hospitals, airline reservations companies, and many other huge companies. It allows its user to maintain large information storage at a centralized location.

These computers are commonly too expensive. A normal person is not able to buy it and It is the second largest in capabilities and size of the Computer Family.


Image Credit-www.olcf.ornl.gov

The supercomputer is the biggest, fastest, and very expensive machine. It was developed in the 1960s. This computer is used for highly calculation-intensive tasks such as molecular modeling, climate research, weather forecasting, quantum physics, physical stimulations, etc.

Supercomputers are ultra-fast computers that are designed to process a huge amount of scientific data and then display the underlying patterns which have been discovered.

Supercomputers are powerful machines that have speed in the 100-million-instruction-per-second range. “The government especially uses this type of computer for their different calculations and heavy duties”.

Now it’s time for the Quiz test. Click here the given button to proceed

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