Computer: Who invented, Types, Applications

A computer is a certain electronic device that can manipulate data or information. It can retrieve, store, and process data. English mathematician and inventor Charles Babbage is famous for creating the first automatic digital computer.

A computer can be used to send emails, type documents, browse the web, and even play games.

The five basic parts or basics of a computer are the output unit, an input unit, a control unit, a memory unit, an arithmetic, and a logical unit. The arithmetic and logical unit perform the task of processing instructions and data.

A computer has RAM, also known as random-access memory, which is mainly short-term memory where important data is stored because the processor needs it. Another important computer part is the ROM, also known as read-only memory.

A computer can process important information in a specific sequence of events, including input, storage, processing, and output.

A PC or computer’s most important startup program is called BIOS or Basic input/ output system. It is mainly the built-in core processor software that is responsible for booting up the entire system.

A computer operates by changing important information into binary numbers and then uses simple mathematics to make decisions regarding rearranging those numbers into actions and words.

Types of a computer

There are mainly three types of computers, depending on their capabilities of handling data, such as:

  • Digital computer.
  • Analog computer.
  • Hybrid computer.

The Following Are Some Examples of Computers.

Today, there are various examples of a computer that help us a lot, such as:

Super Computers:

These are the most expensive and fastest computers. These computers are big in size and can solve different types of engineering and scientific problems. Supercomputers usually get their processing power with the help of parallel processing.

Quantum Computer:

Quantum computers are replacing Supercomputers due to their excellent capabilities.

Mainframe Computer:

These are similar to supercomputers in several ways; however, the notable difference is that a mainframe can perform thousands of functions concurrently, while a supercomputer needs to use all its raw power to perform and focus on various tasks.

Server Computer:

A server computer, also known as a network server, contains collections of programs and data. This allows all connected users to store and share electronic applications and data.

Workstation Computers:

These are high-end and expensive computers that are developed for more complex procedures. These are intended for just a single user at a time.


These are mainly mini-computers that allow users to store information and execute simple tasks and commands. Most of these are called embedded systems.

Personal Computer:

A personal computer or PC is also called a Microcomputer. These are low-cost computers, and hence, are used by many people worldwide.


A mobile device usually combines mobile and cellular computing functions into just one unit.

Applications of Computers

There are various important applications of a computer, such as:


PCs are used at home for different purposes, such as watching movies, online bill payment, social media access, home tutoring, playing games, browsing the internet, etc.

Medical field:

In hospitals, computers are used to maintain a database containing the diagnosis, history, live monitoring, and X-rays of different patients. Today, even many surgeries are done with the help of a computer.


Computers are used in educational institutions to conduct online classes, online tutoring, and online examinations.


In many government sectors, computers are used to maintain a database, process data, and many more.


In this sector, computers help a lot in storing important details of customers and performing important transactions.

So, here we have discussed several factors related to a computer that can benefit you.

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