What Is A Computer – Basics, Features, History & Definition

Computer has become an important part of our life. It is used daily from school to office. And computer is being used a lot in homes to handle daily work.

So we all should introduce computers well. Only then can we succeed in using this electronic device properly. In addition, important questions related to computers are also asked in competitions. Due to this, it becomes necessary to have basic knowledge of the computer.

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

What Is A 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.

Tying a computer into words is a bit difficult. This is because every human being uses the computer for different tasks.

There is also a common belief about computer that Computer is an English word. Computer meaning in Hindi (Computer Meaning in Hindi) is ” Count “. This means the computer is a calculating machine is (Calculator). However, it would be wrong to call a computer a connecting machine. Because in addition to connecting computers, hundreds of different functions are done.

If you ask a writer / typist what is a computer ? So he might say that computers are a type of machine. Similarly, if we asked a child playing a game, he might say that a 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.

Despite the meaning of computer, we have tried to define a computer for you. You cannot consider the definition of this computer as a certified definition of computer. Because on the basis of work, the meanings of computers also change.

What Is A Computer

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 .

Fact Of The Day

The father of the computer, ” Charles Babbage ” has been considered. He invented the Analytical Engine in the year 1833, which became the basis of modern computers. For this reason, he was been given the title of Father of Computer

What Is The Full Form Of Computer

The full form of computer is Commonly Operating Machine Particularly Used in Technology Education and Research

C – Commonly
O – Operating
M – Machine
P – Particularly
U – Used in
T – Technology
E – Education and
R – Research

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 on the basis of 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.

Types Of Computers

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

  1. Application
  2. Purpose
  3. Size

Introduction to Computer

Computer cannot do its work alone. Computer takes the help of many types of devices and programs to perform a task. These 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. A common computer looks like this.

what is a computer

The computer you are seeing above is called ‘ Desktop Computer ‘. In the present time, this type of computer is more popular. In this photo you will be seeing many different devices, all of them together make a computer machine. Let us know about these devices in brief.

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.

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.

Characteristics Of Computer 

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

1. Speed ​​

  1. Computers work very fast.
  2. It can process millions of instructions in just one second.
  3. Its data processing speed is measured in microseconds (10 –6 ), nanoseconds (10 –9 ) and picoseconds (10 –12 ).
  4. Typically the speed of a unit of the processor is tens of millions of instructions per second, ie MIPS (Millions of Instructions Per Second).
  5. This machine has been built to work at a rapid pace.

2. Accuracy

  1. The computer works on the principle of GIGO (Garbage in Garbage Out).
  2. The results produced by it remain impeccable. If there is an error in a result, then it is based on human intervention and the instructions entered.
  3. The accuracy of its results is much higher than the human results.

3. Diligence

  1. Computers are a fatigue free and hardworking machine.
  2. It can perform its work smoothly with equal purity without stopping, tired and boredom.
  3. It fulfills the first and last instructions with equal concentration, focus, hard work and purity.

4. Multi-talent & Versatility

  1. Computers are a multi-purpose machine.
  2. Apart from doing this calculation, they are capable of doing many useful tasks.
  3. Through this, we can do all the necessary work like typing, documents, reports, graphic, videos, emails etc.

5. Automation

  1. It is also an automatic machine.
  2. It can complete many tasks without human intervention.
  3. Automation is very important to it.

6. Communication

  1. A computer machine can also interact with other electronic devices.
  2. Through this network, you can easily exchange your data to each other.

7. Storage Capacity

  1. Computer has very large memory.
  2. Results produced in computer memory, instructions received, data, information and all other types of data can be stored in various forms.
  3. Due to storage capacity, the computer avoids duplication of work.

8. Reliability

  1. It is a reliable and reliable machine.
  2. It has a long life.
  3. Its accessories can be easily turned and maintained.

9. Nature Friendly

  1. Computers do not use paper to do their work.
  2. Even for storing data, paper documents do not have to be made.
  3. 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 present, computers are developing the ability to think and reason through Artificial Intelligence.
  3. Needs clean environment to make it work. Because its functionality is affected in a dusty place. And it can also stop working.

History of Computer

Modern computers are the result of history. Which had already started in BC. When the Chinese invented the abacus. After this various types of automatic machines came into existence. And the automatic engine made by Charles Babbage became the basis of today’s computer.

The history of computers is full of similar ups and downs. Which are briefly explained below.

  • Abacus was the first calculating machine in the world by which general calculations (add, subtract) could be done.
  • Abacus was invented by the Chinese about 2500 years ago (its exact time is not known).
  • This device remained the only gun to be gunned until the 17th century.
  • In 1017 John Napier mentioned his mathematical tools in his book “Rabdology”. Whose name was “Napier’s Bones”. This device was used to calculate the products and find the quotient. The method used to perform calculations in this device was called ‘Rebology’.
  • Addition, subtraction, multiplication, division could also be done by this device.
  • A few years after John Napier’s invention (around 1620), the Honorable William Oughtred invented the ” Slide Rule “.
  • By this, calculations like multiplication, division, square root, trigonometry could be done. But less used for addition and subtraction.
  • In 1642, at the young age of 18, Math created the first practical mechanical calculator by a French scientist and philosopher.
  • The name of this calculator was “Pascalin”. By which calculations could be done.
  • Then in 1671, an advanced machine ‘Step Reckoner’ was invented, reforming Pascalin. In addition to adding, subtracting, could also do multiplication, division, square root.
  • This machine, developed by Gottfried Wilhelm Leibniz, also had storage capacity.
  • The Binary System was also developed by them. In 1845, an English mathematical branch named “Boolean Algebra” was invented by an Englishman, George Boole.
  • Modern computers rely on this binary system and the Bullyin algebra for processing data and doing logical tasks.
  • In 1804 Joseph-Marie-Jacquard, a French weaver, made a handloom. Whose name was ‘Jacquard Loom’.
  • It is considered the first ‘information-processed’ device.
  • And the invention of this device proved that machines could be operated by machine code.
  • In 1820, Thomas de Colmar of France created a new calculating machine called “Arithmometer”.
  • By which four basic functions of mathematics could be added, subtracted, multiplied, divided.
  • But due to the Second World War, the development of this machine stopped.
  • In 1822, the father of modern computers, the Honorable ‘Charles Babbage’ invented an automatic mechanical calculator to tabulate the “polynomial function”.
  • The name of this calculator was “Difference Engine”.
  • It was driven by steam and its size was very large.
  • It had the ability to store, calculate and print programs.
  • In 1833, “Analytical Engine” was designed after about a decade of this engine.
  • This engine is considered to be the initial format of modern computer. That’s why “Charles Babbage” is called the father of computers.
  • This machine had all the things that are in a modern computer.
  • In Analytical Engine, Mill (CPU), Store (Memory), Reader and Printer (Input / Output) were working.
  • Now the foundation of modern computer was laid.

After this, the computer developed rapidly. And new technologies were invented. Due to which the computer got out of the huge room and got into our hands. This development sequence is divided into generations. The descriptions of which are as follows.

Generations Of Computers

Here is a list of different generations of computer

Generation NameTimeFeaturesPopular computer
First generation1940 – 1956Use of Punch Cards, Paper Tap, Magnetic Tap as Input and Output Device dependent on Vacuum Tube. Use of machine language for instructions. Magnetic Drums used for memory. Large size and weight is not expensive and reliable from the reach of common people. awayENIAC – Electronic Discrete Variable Automatic Computer EDVAC – Electronic Delay Storage Automatic CalculatorUNIVAC – Universal Automatic ComputerIBM-701IBM-650
Second generation1956 – 1963The use of Magnetic Core (Primary Memory) and Magnetic Tap (Secondary Memory) for memory based on transistor is still required to display the development results of High-Level (FORTON, COBOL) machine languages ​​dependent on Assembly Language Punch Cards and Dependency on printouts used for functional-specificHoneywell 400IBM 7090CDC 1604UNIVAC 1108MARK III
Third generation1964 – 1971 Size based on Integrated Circuit is for small and reliable instructions like BASIC, COBOL, PASCAL. Use high-level machine language. Use of mouse and keyboard in place of five cards and use of monitor for output. Multi- programming operating system in general purpose. Used forPDP-8PDP-11ICL 2900Honeywell 6000 SeriesTDC-B16IBM-360IMB-370NCR-395  
Fourth generation1971 – presentUse of microprocessors dependent on VLSI – Very Large Scale Integrated Circuit technology. Development and use of operating systems based on GUI – Graphical User Interface technology. Rapid development of operating systems based on GUIs like MS-DOS, MS-Windows, Mac and the development of microcomputers. Revolution became faster, more reliable size, smaller and lighter common man’s access to Internet, use of C, C ++ programming languages ​​less expensiveIBM 4341DEC 10STAR 1000PUP 11PCsMacintosh
Fifth generationPresent to futureSmall, lightweight, easy to use, cheap and reliable and direct access to common man based on ULSI – Ultra Large-Scale Integrated Circuit and AI – Artificial Intelligence technology. Development of artificial intelligence and Internet and Things technology. Touchscreen, use of voice control C, C ++ , Java, .net, ASP languages ​​usedDesktop PCsMac BooksLaptopsUltra-BooksiPhonesiWatchSmartphonesWearable Devices
Computer Generations

Career Opportunities in The Computer Fields

The computer field is very large. Many types of specialized areas have been developed here. Which are also divided into subfields. Therefore, the computer sector is green in terms of career.

Just, there should be a cultivator in the right way.

For your convenience, I am talking about some popular (not all) computer jobs. Which you can get by studying computer subjects and related subjects.

#1 Computer Programmer

The person who writes the code of the computer you are running is called a computer programmer. This is where a person writes code for all types of functions present in the computer. And makes things easier for us.

A computer programmer is knowledgeable in various programming languages ​​and has the ability to do coding in all these languages. However, some programmers emphasize only on a particular language. And coding in the same language.

It is the programmers who transform the dreams of designers and employers into reality. And they work to convert them into reality. In addition, the already prepared programs, testing of software, and error checking are also done.

#2 Hardware Engineer

You know that a computer is a single machine. A lot of other parts are needed to make it work. Hardware engineers do the work of making, testing and analyzing these different devices according to their new requirements.

Where part will be found in a computer system, what should be its design, it takes care of the convenience of the users, such important work is also done by a professional person.

It is also the job of the hardware engineer to check and update the hardware compatibility when the software changes. The RAM is installed in your computer, the motherboard is installed, the design of the cabinet handles all these tasks by the hardware engineer.

If your mind likes to make new things and play with them, then you can try your hand in this career.

#3 Software Developer

You can also compare it with a computer programmer. But, there is a month difference between them. Which is important to understand. Only then you will be able to understand properly about these two careers.

A computer programmer primarily creates programs running on top of computer hardware. Such as operating systems, utility programs, etc.

And a software developer develops computer programs to meet the needs of common users. like; MS Office, Tele, WhatsApp, Browser etc.

#4 Web Developer

You are reading this article on a website. Which has been developed by web developer. Their main job is to build websites.

In addition, the web developer is responsible for handling the necessary technical work such as hosting, security etc. required for a website to go live.

It works closely with web designers. And in small businesses, they share only one office.

#5 Web Designer

The job of a web designer is to design website design, color, button settings, theme design, easy navigation for users etc.

It designs all designs through graphic tools. Which are later actualized by front end programming languages.

Adds this design to a web developer website. And this is how a website is made. In many places, this work is done by a single person. Which is called Full Stack Developer.

A Full Stack Developer has both web designing and web developing skills.

#6 Data Scientist

They are also called data diggers. Because, their job is to dig out different types of data and it has to analyze the data and find meaningful solutions.

Data scientists mainly work with large businesses. Because, this is where data is gathered. The data diggers do important tasks like dividing this data into different categories, analyzing it, finding a particular pattern, then finding a solution to a problem.

#7 Network Administrator

Hundreds of computers work in offices simultaneously. Those who are connected to the network related to company, institute, government department, university etc.

A network administrator performs the work of designing these networks, handling them, resolving technical problems.

#8 Game Developer

The only game maker to make your favorite game is developer. It is known by its name that its work is related to the game. Now this game developing can be for both computer and mobile.

This game can range from solving a particular problem to general entertainment games. Web-based games are also made for the purpose of engaging users on websites. Those who run on web servers. Users do not even need to install them on their devices.

#9 Computer Teacher

You do not just teach computers to work. Rather, you can earn a living by teaching others. That is, you can also make a career in teaching.

To teach computer, you also have to take education degree along with computer. Which you can also get through distance education.

#10 Computer Operator

The job of a computer operator is to operate the computer only. And its actual work depends on the place and position of the work.

For example, at a hotel reception, the job of a computer operator is to update the room booking, room status, bill payment, etc. Similarly, the call management software in the call center has to be managed and interacted with the customers.

You can get job of computer operator only through basic computer course. There is not much demand for any additional skills for this.

#11 Data Entry Operator

The job of a data entry operator matches that of a few computer operators. Its job is to enter entries in the computer program. In return for which he gets salary.

According to the entry on them, they also get work, which can be done online sitting and sitting. The nature of this work is part time. Therefore, you can try this work to get expenses during studies.

#12 Computer Typist

I (ie , GP Gautam remind me, forget somewhere) always say that just as it is necessary to write with studies, in the same way, touch typing along with computer learning is also a very important skill. I have also mentioned this in my touch typing course .

But, neither the teachers pay attention to this and the students are worried about this?

But, do you know that a touch typist has more value than a computer operator. You may be surprised. But here is the truth.

If you go to any court, you will get a sense of the value of a typist. When you have to pay the price per word.

There is also a post of typist in Indian courts. Therefore, you can also get a government job with this simple skill which is ignored.

#13 Blogging

Blogging is the most used and reliable and reliable way of earning money from the Internet .

You have to make your own blog and prepare and publish content according to your interest. If your content is strong and readers like it, then you can convert it into a full-time business by increasing traffic.

For more information about blogging, you must read our guide related to blogging. Here all the questions related to blogging have been answered.

# 14 Vlogging

The other field associated with blogging is vlogging, also called utubing. That is, you distribute your knowledge to people by creating channels on YouTube.

And monetize this knowledge and earn money. Just as money is earned from blogging, similarly, money can also be earned from blogging.

You can get more information about the labeling from the vlogging guide.

#15 Graphic Designer

If you are fond of panting, then you can try your hand in this career. No matter how many areas require graphics in games, websites, icons.

A creative graphic designer works to make the artificial world look real through his graphics. The world shown to you in the games is created by these graphics designers only.

After 12th, you can be ready by taking admission in this field. 

For all these jobs, you have to take basic computer courses from advanced computer courses like BCA, PGDCA, B.Tech, M.Tech and certificate and diploma courses.

To know more about computer courses, you can get detailed information by visiting the link given below.

What have you learned so far?

Full information about computers is given in this article. Did you know what a computer is? Computer features, limitations, computer history, etc. I hope that this article will prove useful to you.

If you are preparing for any computer test related to computer, then this article is very helpful for you. Therefore, you are requested to share this article with your friends so that they too get the benefit of it.

In short, only you can take care of it.

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