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| Computer |
Computer A to Z | computer, an electronic device for storing and processing data, typically in binary form, according to instructions given to it in a variable program. A person who makes calculations, especially with a calculating machine.
From the definition of technopedia: “A computer is a machine or device that performs processes, calculations and operations based on instructions provided by a software or hardware program.”
In simple terms a computer is a machine that performs tasks and calculations based off a set of instructions, or program operations.
||A brief history of computer||
Electronic computers were introduced in the 1940s and they were huge machines that actually required a team of individuals to operate. The word of computer is come from the Latin word “Computare”, which means calculating machine.
In contrast to early computer systems, today's computers are vastly smaller and amazingly powerful. Not only are they thousands of times faster but they are small enough to fit on desk, on our lap, or even in a pocket. In a nutshell computers work through an interaction of physical hardware components and software instructions. Hardware is the actual physical parts of a computer that you can see with your eyes or touch with your hands.
Software is basically a collection of code that makes up a computer program. The hardware in turn carries out instructions by a computer program on a complex level using electricity.
When talking about computers the most important piece of hardware is a chip inside your computer called the central processing unit, or in short a CPU. Microprocessor is also a very common term used. Think of it as the "brain" of your computer. Like your own brain it can translate instructions and perform calculations.
Other hardware items such as a monitor, keyboard, mouse, printer, video card, sound card, or other physical piece is often called hardware devices or even just devices for short.
When looking at software, it is the actual instructions, or programs, that tell the hardware components what to do. Without software the hardware is essentially useless. A computer game, word processing program, or Internet browser are some common types of computer software.
Of course the most important piece of software for a computer system is the operating system or also commonly called just the OS for short. It is responsible for managing your entire computer and all the devices connected to it. Popular operating systems include Windows XP, Windows Vista, Mac OSX, and Linux among others.
Computer has four important works mainly. These are:
1. Collects data from input devices.
2. Process data from instructions.
3. Send resultant data to output devices.
4. Store data in memory.
||Generations of computer||
The different generations of computer:
- 1940 – 1956: First Generation – Vacuum Tubes. These early computers used vacuum tubes as circuitry and magnetic drums for memory.
- 1956 – 1963: Second Generation – Transistors.
- 1964 – 1971: Third Generation – Integrated Circuits.
- 1972 – 2010: Fourth Generation – Microprocessors.
- Present and Beyond: Fifth Generation - Artificial Intelligence
|| Purpose of computer||
The purpose of using computer:
Reason of people use computer. Nowadays, computers had become one of the part in our daily life. Computers can make our jobs become easier. They can be used for communicational purposes (internet), to store and calculate data and to write up massive documents multiple times while only needing to write it up once.
Considering the first “computer” in the USA was called ENIAC, Electronic Numerical Integrator and Computer. It was the first programmable general-purpose electronic digital computer, built during World War II and designed for the specific purpose of computing values for artillery range tables.
||Advantages of computer||
The advantages of computer:
The major advantage of using computers in this way are given below. Computers makes it possible to receive, supply and process large volumes of data at very high speed. Computer reduces the cost of all data related operations including, input, output, storage, processing and transmission.
||Disadvantages of computers||
The disadvantages of computers:
Some of the disadvantages of using computers are by using computers for a long time, our blood circulation can become poor due to less physical activities. It can cause the disturbance in one's meal. Can cause health problems like bad postures, aches, obesity, eye problems, etc.
||Uses of computer||
Computers are used to control large and small machines which in the past were controlled by humans. They are also in homes, where they are used for things such as listening to music, reading the news and writing. Modern computers are electronic computer hardware.
||Types of computer||
There are many types of computer. Nowadays the most uses computer are Desktop and laptop.
Here we know about the types of computer. Initially there are four types of computer-
1. On the Basis of Data
2. On the Basis of Size
3. On the Basis of Brands
4. On the Basis of Purpose
On the basis of Data:
There are three types of computer. These are:
I. Analog Computer
II. Digital Computer
III. Hybrid Computer
On the basis of Size:
There are four types of computer. These are:
I. Micro Computer
II. Mini Computer
III. Mainframe Computer
IV. Super Computer
On the basis of Brands:
There are two types of computers. These are:
I. IBM Computer
II. Apple/Macintosh
On the basis of Purpose:
There are also two types of computers. These are:
I. General Purpose Computer
II. Specific Purpose Computer
That's all for today’s topics on computer a to z. May This article helps you. Thank you so much for reading.
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