What is computer full detail

What is a computer?  What are the types?  It does not know its origin, definition, how it works and so on

What is a computer?

 Computer is a sophisticated electric device.  Origin of the English computer word from the Latin word Computare.

 The word "computer" has a partial meaning, a computation machine or an accounting machine.  In the past, only computer accounting was done.  But with the sophisticated computer, many kinds of work can be done without having to perform complex calculations very fast.

 Computers can do billions of calculations in seconds.  The speed of working on a computer is calculated in nanoseconds (NS).  Nanoseconds are only a fraction of a hundred percent of a second.

 There are many circuits inside the computer.  Through the flow of electrons all the functions of the computer are governed.  Computer language or computer language based on electronic signals.

The computer returns the results based on the instructions given by the computer through the language it understands.  Computer instructions are called programs.  Without a program, computers are nothing more than an inanimate object.  Compatible programs can turn computer into a mathematical, intelligent machine.

Definition of computer

 "Computer is a special electronic device designed to solve a variety of problems.  It can store many instructions in memory simultaneously and execute those commands one at a time, accurately and quickly. "

"Computer is an Electronic Device for Storing and Processing Data Typically in Binary Form, According to Instruction given in a Varble Program."

 Who is the father of modern computers?

The father of modern computers is the scientist Charles Babbage.  He was an English engineer, mathematician, inventor and philosopher altogether.  He was born in London in the 5th.

 Scientist Charles Babbage 1 first thought of the use of instruments to calculate numbers and tables by mechanical means.  And by his very thought, he plans to build a machine that will be powered by a punched card, and will be able to perform sequential tasks one by one.  This device is considered to be the first version of the modern computer and is also known as an analytical engine.  However, due to lack of funding, Charles Babbage could not complete the project.  But even then this analytical engine could solve many mathematical problems mechanically.  And many features of this engine are still very important in modern computer design.  That is why Charles Babbage is called the father of modern computers.

The structure of modern computers

The journey of modern computer technology began in the sixties, but it has grown widely today.

 The modern computer is made up of five parts

• Memory
• Part of mathematical reasoning
• The control part
• Input device 
• Output device 

1 / Memory: The part of the computer where the information is stored is called memory.  The computer can store the required information in memory during the working hours and can do all the work of adding, subtracting, multiplying, dividing the data from time to time.  Memory has direct connections to other parts of the computer.  In order to work on any computer with any information, it is necessary to first store that information in memory.  There are two types of memory.  Namely: -

• Praymary memory
• Secondary memory

2 / Mathematical reasoning part: This part involves solving mathematical problems, reasoning and decisive work for processing.  This part is all the work of calculating the data;  Examples: - Performs addition, subtraction, multiplication, division, etc. As well as performing related tasks such as "no" and "yes".  At the end of the performance, the results are stored in the main memory and passed to the output unit and the part is inside the microprocessor.

 1 / Control part: This part coordinates with various parts of the computer through control bus and controls all activities.  This part is also inside the microprocessor.  When the information is needed in memory, the control portion determines whether to take the cache from memory to memory.  Control is also part of the process of accepting input in memory and extracting information after processing.  Instruction of the program is the function of sending instructions to other parts.  In addition, the controller functions and controls other hardware peripherals connected to the computer.

The way the computer works

 Computers work mainly on hardware and software.

 What is hardware?

 Hardware is all of the components, components, and devices of a computer's external shape.

 The hardware of the computer can be basically divided into three parts.  Namely: -

• Input devaice
• Output devaice
• System devaice

1 / Input device: Any device or device on which a computer is given instructions or any data or information or media is inputted or inserted is called an input device.  Such as: - Keyboard, Mouse, Scanner, Dix, Card Reader, Microphone, Digital Camera etc.

 2 / Output device: The device or device through which the computer transmits or receives information or data or media through which the unit is called the output device.  Such as: - Monitors, speakers, printers, headphones, projectors, dicks, pen drive etc.

 সিস্টেম / System Device: The device or component that is required to activate or activate the computer is called a system device.  Such as: - Motherboard, harddix, RAM, processor, power supply etc.

 What is software?

 Software is a set of programs or programs that make the hardware functional by creating a connection between the computer hardware and the user is called the software.

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

• System software
• application software

১ / System software: System software utilizes the ability of the computer to execute practical programs by coordinating the work between different units of the computer.  Some of the favorite system software are: - Fedora, Mac OSX, Windows XP, Windows Vista, Linux, Windows 7, Windows 7, Windows 7.

 2 / Application software: Application software is a program used for problem solving or data processing.  There are thousands of application software such as: Microsoft Office, Photoshop, Media Player, etc.

What kind of computer and what?

 The computers used in the present world can be categorized into different types, namely: -

• Types of computers according to the type of work and the type of application used. 
• The classification of computers according to the nature of organization and work. 
• Digital computer or computer classification according to size, volume and functionality.

There are two types of computers depending on the type of work and the area of ​​application.  Namely: -

• Computer for special use. 
• Computer for public use.

The structure is also of three types depending on the nature of the work or the technology.  Namely; -

•  Analog computer 
• digital computer
• hybrid computer

Microcomputer 3 again.  Namely: -

•  Desktop computer 
• laptop computer computer desktop computer computer pocket computer