Introduction to computer system

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In this blog you will be able to understand that

What is computer system, Components of computer system ,Characteristics of computer ,Applications of computer system, Input and Output devices

Introduction to computer system

The computer is an electronic machine that processes the given input to produce meaningful information called output .The input or data is entered in to the computer through an input devices like keyboard ,the central processing unit (CPU) and the output gets displayed on an output devices like monitor or visual display units (VDU) .Computer can store a large amount of information in various storage media.

COMPONENT OF COMPUTER

Computer follows input-process-output cycle (IPO CYCLE) in order to perform a task.

The basic structure of computer system consists of :

• Input Unit
• Central Processing Unit
• Output Unit
• Memory

Input Unit

The input unit consisting of input devices,is responsible for accepting input i.e., data and instructios from the user. Some examples of input devices are keyboard, mouse, Magnetic Ink Character Reader (MICR), joystick, Optical Character Reader (OCR), microphone, etc.

Central Process Unit

Central Processing Unit (CPU) is called the Brain of the Computer System. It consists of two components:

• Arithemtic and Logic Unit (ALU) and
• Control Unit(CU)

Arithmetic Logic Unit (ALU) performs all of the arithmetic calculations and takes logical decisions like Is 50 > 30? The answer to all logical problems is either ‘True’ or ‘False’.

Control Unit (CU) controls the flow of information within the computer system. In other words, the entire processing is monitored and controlled by the control unit.

Output Unit

The Output Unit, consists of output devices, is responsible for producing the output in user readable form, the example of output devices are moniter, printer, plotter and speaker, etc.

Memory

The internal memory of the computer is called Primary Memory. Internal or Primary memory hold the data while processing. The internal memory is divided into many storage locations, each of which can store data or instructions.

• Read Only Memory(ROM)
• Random Access Memory (RAM)

Characteristics of a COMPUTER

• Speed: Computer work at very high speed. A computer can perform a task in minutes that may take days if performed manually.
• Accuracy: Computers are very accurate. It can give very accurate results of very complicated calculations.
• Storage Capicity: A computer has very large capacity to store information. It can store large amount of data in a very small space.
• Reliability: Computers are considered to be very reliable machine .They do not make mistakes in their own .
• Diligence: Being a machine ,a computer does not suffer from boredom, tiredness,or lack of concentration.
• Versatility : Computers can perform different types of jobs efficiently . They can work different types of data and information example: text, graphics, audio, video etc.

APPLICATIONS OF A COMPUTER

• Education
• medicines
• Business
• Science and technology
• Communication
• Banking
• Railway/Airlines reservation
• Weather forecasting
• Entertainment
• Defence
• Desk top publishing {DTP}

I hope that this article is helpful for you .Thanks for reading this article friends comment down that which topic do you want to read next i will surely write down for you .