What is a computer, its characteristics, history, definition information?


What is a computer

Computer has become an important part. It is used daily from school to office. And computers are also being used a lot in homes to handle daily work.

So we all should introduce computers well. In addition, important questions related to computers are also asked in competitions. Due to this, it becomes necessary to have basic knowledge of computer.

Keeping all these things in mind, I have prepared this article. In which I am share in this post complete information about computer. For the convenience of the study, this article is divided into the following parts.

What is Computer?

Hundreds of thoughts start coming in the mind as soon as I hear the name of the computer. Because Computer can do hundreds of activities alone. Yes, hundreds! You read it right and that too together.

Computer convert  into words is a bit difficult. This is because every person uses the computer for more different work.

There is also a common belief about computer that Computer is an English word. This means that the computer is a calculator.

If you ask a writer / typist what is a computer? So he might say that computers are a type machine. Similarly, if we asked a child playing a game, he might say that computer is a game machine. If you ask the computer operator, he will try to define it in the context of the machine handling office work.

Therefore, we can say that computer cannot be tied in any one sense. The meaning of computer is different for every person depending on its usage.

Definition of computer

“A computer is a machine that performs tasks according to certain instructions. To say more, a computer is an electronic device that accepts data with the help of input devices and processes them and provides those data in the form of information with the help of output devices. "

It is clear from this definition that the computer takes some instructions from the user first which are entered with the help of various input devices. Those instructions are then processed, and finally returns the results based on the instructions that the output displays with the help of devices.

Instructions include several types of data. like; Numbers, alphabet, figures etc. According to this data, the computer produces the result. If wrong data is given to the computer then the computer also gives the wrong result. Meaning that the computer works on the rule of GIGO - Garbage in Garbage Out.

What is the full name of computer?

Due to computer being a multi-purpose machine, till date we have not been able to tie it into a definition. In this episode, the full name of the computer is also discussed. Which different people and institutions have interpreted differently based on their experience. However, none of these is Standard Full Form. I have given below the full form of a computer for you. Which is quite popular and expressive.

C - Commonly

O - Operating

M - Machine

P - Particularly

U - Used in

T - Technology

E - Education and

R - Research

That is, Commonly Operating Machine Particularly Used in Technology Education and Research.

Different types of computers

There are mainly three types of computers. You can learn more about them from the computer type Lesson.

·         Application

·         Purpose

·         Size

Introduction to computer

Computer cannot do its work alone. Computer takes help of many types of devices and programs to perform any work. A computer tools and programs are known as 'Hardware and Software' respectively. You will be able to know about these computer tools and programs in the next Lessons. This is how a common computer looks like.

1. System Unit

A System Unit is a box in which the computer is equipped with the necessary equipment to do its work. The system unit is also called CPU (Central Processing Unit). There are devices like motherboard, processor, hard disk etc. that make the computer workable. It is also called Computer Case.

2. Monitor

Monitor is an output tool that shows the results of the instructions given to us. It is exactly like TV. Currently LCDs and LEDs have been replaced by monitors.

3. Keyboard

Keyboard is external part of computer. Its help, the desired data and instructions are given to the computer. There are different types of keys in it, through which data and instructions are sent to the computer. You can learn to use the keyboard from here.

4. Mouse

Mouse is also an input tool used to instruct a computer. We select the program available in Computer by this. You can learn to use the mouse from here.

5. Speakers

Speakers are output devices that help us listen to voice from computer.

6. Printer

Printer is also an output tool for receiving computer-analyzed information on paper. The information received on paper is also called 'hardcopy'. And on the contrary, the information which remains in the computer itself is called 'softcopy'.

Characteristics of Computer

The computer has captured most of the work that we humans do and has given the man more work capacity than his capacity. All this is possible due to the special qualities of this machine. That's why we humans are making computers a part of our lives. Following are some of the special features of a computer.

1. Speed

·         Computers work very fast.

·         It can process millions of instructions in just one second.

·         Its data processing speed is measured in microseconds (10–6), nanoseconds (10–9) and picoseconds (10–12).

·         Typically the speed of a unit of the processor is tens of millions of instructions per second, ie MIPS (Millions of Instructions Per Second).

·         This machine has been built to work at a fast pace.

2. Accuracy

·         The computer works on the principle of GIGO (Garbage in Garbage Out).

·         The results produced by it remain impeccable. If an error occurs in a result, then it is based on human intervention and the instructions entered.

·         The accuracy of its results is much higher than human results.

3. Hard-working - Diligence

·         Computers are a fatigue free and hardworking machine.

·         It can perform its work smoothly with equal purity without stopping, tired and boredom.

·         It fulfills the first and last instructions with equal concentration, focus, hard work and purity.

4. Multiplex - Versatility

·         Computers are a multi-purpose machine.

·         Apart from doing this calculation, they are capable of doing many useful tasks.

·         Through this, we can do all the necessary work like typing, documents, reports, graphic, videos, email etc.

5. Automatic - Automation

·         It is also an automatic machine.

·         It can complete many tasks without human intervention.

·         Automation is its great quality.

6. Communication

·         A computer machine can also interact with other electronic devices.

·         Through this network, you can easily exchange your data to each other.

7. Storage Capacity - Storage Capacity

·         Computer has very large memory.

·         Results produced in computer memory, instructions received, data, information and all other types of data can be stored in various forms.

·         Due to storage capacity, the computer avoids duplication of work.

8. Reliable - Reliability

·         It is a reliable and reliable machine.

·         It has a long life.

·         Its accessories can be easily turned and maintained.

9. Nature's Friend - Nature Friendly

Computers do not use paper to do their work.

Even for storing data, paper documents do not have to be made.

Therefore, computers are indirectly the protectors of nature. And this also reduces the cost.

Limitations of Computer

1.       Computers are a machine that we humans have to depend on to do our work. As long as there are no specific entries in it, it cannot produce any result.

2.       There is no discretion in this. These are intelligent machines. It does not have the ability to think and understand. But at the present time, the ability to think and reason to computers is being developed by Artificial Intelligence.


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