What is a computer? How does a computer work?

what-is-computer-how-does-computer-work

Computer which is widely used and very important in daily life. Due to the current era of information and technology dependence, the demand for it is increasing day by day. What is a computer for most people? Even if you know about it, how does the computer actually work? Many people are unaware of its types and usage. In today's post we will discuss them in detail. Let's find out.


Computer:


A computer is a device that can perform mathematical calculations very quickly by following specific instructions. The word computer comes from the Greek word "compute". The word compute means to calculate. And the word computer means calculating device.But computers are no longer just calculators. A computer is a device that receives information and analyzes and presents it through various processes. At the root of the development of civilization and its rapid progress at present is the strong influence of mathematics and computers. The first computer came to Bangladesh in 1984.


Who is the father of computer:


Scientist Charles Babbage gave the first idea of ​​making a computer. In 1833, he planned to build the first mechanical computer called Analytical Engine and designed the engine. Later, modern computers were made based on his designs and computers. Charles Babbage is called the father of computers because he had the idea of ​​a modern computer in his design of this analytical engine.


John von Neumann, on the other hand, is said to be the father of the modern computer. He is an American mathematician of Hungarian descent. Newman is a pioneer in the use of operator theory in quantum mechanics. He has contributed to many fields including set theory, geometry, flowing dynamics, economics, interactive programming, computer science, statistics.


Name of the world's first computer:


The world's first computer is called ENIAC (Electronic Numerical Integrator and Computer). This is the first digital computer to work with programs. From then on, the computer generation started.


During World War II, when the U.S. military planned to build a fully electronic computer, computer masters such as Von Newman, the father of modern computers, Presper Eckertie Jr., and Herman Goldstein, joined the Moore School of Electrical Engineering and the University of Pennsylvania. Forty scientists operated the three-walled computer in a fifty-foot-by-thirty-foot underground chamber.


How a computer works:


Computers usually perform a combination of two mediums. Discussed with examples below.


First, hardware: Hardware is all the devices, parts and devices that have the external shape of a computer. Computer hardware can be further divided into three parts.


A) Input equipment: keyboard, mouse, disk, scanner, card reader, digital camera etc.


B) System unit: hard disk, motherboard, AGP card, RAM etc.


D) Output equipment: monitor, printer, disk, speaker, projector, headphone etc.


Second, software: A program is a series of instructions that are sequentially arranged in computer language to solve problems or perform tasks. Software is the program or set of programs that make the hardware work by creating a relationship between the computer's hardware and the user. Computer software can be divided into two main parts.


A) System software: System software successfully maintains the coordination of work between the different units of the computer and successfully employs the ability of the computer to execute practical programs.


B) Application software: A program used to solve practical problems or process data is called application software. A variety of programs designed to solve practical problems are available as commercial products, also commonly referred to as package programs.


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