What Is A Computer? How Many Types? Who Is The Father And The Definition

A computer is a sophisticated electric device. The English word computer originates from the Latin word computer.

The word computer literally means a calculating device. In the past, only calculations were done with a computer. But nowadays, with the help of sophisticated computers, many kinds of work can be done in addition to performing complex calculations very fast and accurately.

Computers can do billions of calculations in seconds. The speed at which a computer works is calculated in nanoseconds (NS). A nanosecond is just a fraction of a billionth of a second.

There are many circuits inside the computer. All the activities of the computer are conducted through the flow of electrons. Computer language is a computer language based on electronic signals.

Computer
Computer Basic Info

The computer provides results based on the instructions given to the computer through the language understood by the computer. Computer instructions are called programs. Computers are nothing but inert matter without programs. Proper programming can turn a computer from inert matter into an intelligent device with mathematical power.

Definition Of Computer

A computer is a special electronic device designed to solve a variety of problems. It can store many instructions in memory at once and execute them one by one if necessary, accurately and quickly.

Who Is The Father Of Modern Computer?

The father of the modern computer is the scientist Charles Babbage. He was simultaneously an English mechanical engineer, mathematician, inventor and philosopher. He was born in 1891 in London.

The scientist Charles Babbage first invented the use of instruments in 1810 to calculate numbers and tables mechanically. And it was with this in mind that by 1830 he planned to build a machine that would be powered by punched cards and perform a sequential task. This device is considered to be the first version of the modern computer and is also known as the analytical engine. However, due to lack of funding, Charles Babbage could not complete his project. But even then his analytical engine could mechanically solve various mathematical problems. And many of the features of this engine are still very important in modern computer design.

The Structure Of Modern Computers

Structure Of  Computer

Although the journey of modern computer technology started in the 1950s, it has now spread widely.

Modern Computers Consist Of Five Parts


  1. Memory
  2. Mathematical logical part
  3. Control part
  4. Input part
  5. Output part

1 / Memory: The computer can store the required information in the memory during working hours and can do all the work including addition, subtraction, multiplication and division with the information from here when needed. Memory is directly connected to other parts of the computer. If you want to work on a computer with any information, first you have to store that information in memory. Memory is of two types. Namely: -

  1. Primary memory.
  2. Secondary memory.

2 / Mathematical logic part: In this part, mathematical problem solving, logic and decision making work is done for processing. This part is all the calculation work on the data; Such as: - Performs addition, subtraction, multiplication, division etc. and also performs functions related to logic such as ‘no’ and ‘yes’. At the end of the operation, the results are stored in the main memory and sent to the output unit, this part is inside the microprocessor.

3 / control part: This part controls all the activities by coordinating with different parts of the computer through the control bus. This part is also inside the microprocessor. The control part decides when the data will be needed in the memory, whether to take it from cache memory to memory. The function of receiving input in memory and the process of outputting data after processing is also part of the control. This part of the program is to send instructions to other parts of the program. The controller also controls and controls the other hardware peripherals connected to the computer.

The Way The Computer Works

Computers are basically a combination of hardware and software.

What is hardware?


Hardware is all the devices, components and devices that have the external shape of a computer.

Computer hardware can be basically divided into three parts. Namely: -

  1. Input device
  2. Output device o
  3. System device
1 / Input Device: The device or device through which any instruction is given to the computer or any data or information or media is input or inserted is called input device. Such as: - Keyboard, mouse, scanner, disks, card reader, microphone, digital camera etc.

2 / Output Device: All the devices or devices through which the computer transmits or receives any information or data or media is called output device. Such as: - Monitor, speaker, printer, headphones, projector, disk, pen drive etc.

3 / System Device: All the devices or parts that are needed to keep the computer active or not are called system devices. Such as: - Motherboard, hard disk, RAM, processor, power supply etc.

What is software?


Software is a set of programs or programs that make the hardware work by creating a relationship between the computer's hardware and the user.

Computer can be basically software divided into two parts. Namely: -

  1. System software
  2. Application software

1 / System Software: System software keeps the computer capable of executing practical programs by maintaining the coordination of work between different units of the computer. Some of the popular system software are: - Fedora, Mac OSX, Windows XP, Windows Vista, Linux, Windows 7, Windows 7, Windows 10.

2 / Application software: Application software is a program used to solve practical problems or process data. There are thousands of application software such as:  Photoshop, Photoshop, Microsoft Office, Media Player, etc.

How many types of computers and what are they?


Computers used in the world today can be classified in different ways such as: -


 
  1. Types of computers according to the type of work and application.
  2. Classification of computers according to structure and nature of work.
  3. Digital computers or classification of computers according to size, volume and functionality.

There are two types of computers according to the type of work and application. Namely: -


  1. Computers for special purposes.
  2. Computers for general use.

There are also three types of computers according to the nature of work or technology. E.g.:


  1. Analog computer
  2. Digital computer
  3. Hybrid computer

There are four types of digital computers or computers according to size, volume and function. Namely: -


  1. Super computer
  2. Mainframe computer
  3. Mini computer
  4. Microcomputer

There are 5 types of microcomputers again. Namely: -


  1. Desktop computer
  2. Laptop computer
  3. Palmtop computer
  4. Notebook computer
  5. Pocket computer
Notice the image below to better understand the type of computer.

Computer Classification


Computer Use Or Application Field


In this modern age, there is a lot of use of computers all around. Nowadays, in almost every case, the application of computer is eye-catching. The main reason for this is that due to the perfect performance of the computer, speed, memory, automatic performance, endurance, etc., it is possible to do a lot more work in less time. As a result, its application is increasing day by day.

Some Notable Application Areas Of Computer.


  • Use of computer in communication
  • Use of computer in office management
  • Use of computer in education
  • Use of computers in research
  • Use of computer in agriculture
  • Use of computer in data communication.
  • Use of computer in banking
  • Use of computer in publishing
  • Use of computer in medical field
  • Business - Use of commercial computers
  • Use of computer in entertainment
  • Use of computer software in design

The Predominance Of Modern Computers


1 / Speed: Computer works incredibly fast. The reason it is so fast is because it works through an electrical signal, which travels at almost the same speed as the speed of light.

2 / Credibility: Although the computer works fast, its work is perfect. Due to advanced technology, it is always possible to perform certain tasks perfectly accurately with specific programs on the computer. However, in this case, the program and data must be 100% accurate. Modern computers have proven that people make mistakes, but computers do not make mistakes.

3 / Precision: The precision of the results obtained in the computer is incomparable. The subtlety of its calculations is extremely high. In the case of mathematical calculations it is able to give results in many places.

4 / Tirelessness: Even if you work continuously for a long time, the computer does not get tired or does not make mistakes in calculations.

5 / Memory: The memory of the computer is very large; Billions of data and instructions can be stored in it.

7 / Rational Decision: Not only can a computer perform various mathematical processes, but it can also perform logic processes. Can also make reasonable decisions on various matters.

7 / Versatility: Today's computer has become a powerful means of accomplishing complex tasks. Computers can help people with many things, from simple calculations to solving complex scientific problems.

7 / Automation: The computer works automatically. Computers perform a series of interdependent tasks. This means that the computer can solve the problem by processing the data as per the instructions given.


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