Memory of Computer

— RAM-Random Access MemoryROM- Read Only Memory

    Cache Memory (BIOS-Basic Input Output system)

         Input Device :- The electric, electronics   and  physical component of a computer is called Hardware.

   
    —CPU, HDD, Monitor, Keyboard etc.

  


—Processing Device : software represents the set of programs that govern                                                             the operation of a computer system and make the hardware run.

—Output Device:  Application Software i.e. MS-Office, Tally & Fox- Pro. etc

—System Software i.e. Windows Xp, DOS, Win Vista, Windows 2007 etc.

—Operating System

—  Hardware : The electric, electronics              and physical component of a computer is called          Hardware.

—       CPU, HDD, Monitor, Keyboard etc.

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Software : software represents the set of programs that govern the operation of a computer system and make the hardware run.

—Application Software i.e. MS-Office, Tally & Fox- Pro. etc

—System Software i.e. Windows Xp, DOS, Win Vista, Windows 2007 etc.

Classification of digital Computer

—Micro Computer or PC

—One User work at a time on a computer.

—Come on a simple desk & low in prize.

—Mini Computer

—Up to 10 users work at a time on a computer.

—Used by a Medium Level Company

—It size was Refrigerator size.

—Main Frame Computer

—Up to 100 user work at a time on a computer.

—Used by High Level Company, Banks, Govt. Sector etc.

—It size was complex size.

—Super Computer

—Used by the Scientist for Research & Development.

oRADAR

oSONAR

oSatellite purpose

oForecasting & Broadcasting

Classification of Computer

—Analog Computer: In analog continuous quantities are used. Computations are carried out with physical quantities such as voltage, length, current, temperature etc.

—i.e. Calculators, & Thermometers etc.

—Digital Computer: The digital computers works upon discontinuous data. They convert the data into digit (Binary Digits 0 & 1) and operations are carried out on these digits as extremely fast rates.

—i.e. Desktop, Laptop PC & Mobiles etc.

—Hybrid Computer : It is a both combinations of Analog & Digital Features.

—i.e. PCO Machine or PCO Printer etc.

vNote: The Digital computer can be classified into four main classes.

Abbreviation of COMPUTER is ?

—C  -  Common

—O  -  Operating

—M  -  Memory 

—P  -  Purposely

—U  -  Used for

—T  -  Training

—E  -  Educational

—R  -  Research  

What is Computer ?

—Computer is an electronics devices. Which working at a very fast speed with high accuracy and capable to perform arithmetical and Logical operations of compute data.    Or

—Computer is an electronic device which can perform a variety of operations in accordance to set of instructions provided to it.

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