Computer systemBy: Nikhil Gaur

WHAT IS COMPUTER?The term computer is

derived from the word compute which means to calculate.

Computer is a electronic device which takes input from the users and after processing it, it gives the required output in form of display or print.Back

BASIC OPERATIONS OF COMPUTER

INPUT OUTPUTPROCESS

Input: Taking input in form of instruction and data.

Process: Processing the instruction and data and storing the result.

Output: Display the stored results or output it into the print format.Next

CPUCentral processing unit if the

heart of the computer and also called as microprocessor.

CPU is made of thousands of transistors which is used to switch and amplify electronic signals.

CPU is divided into 4 units:I. Control Unit.II. Arithmetic logic Unit.III. Memory Unit.IV. Backing Storage.

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MEMORYMemory is the unit that

communicate directly to the CPU is called the main memory.

There are two types of memory:

I. Primary MemoryII.Secondary MemoryGo To Computer Memory Units

Computer

Hardware

Software

System Software

Application software

Input Devices

Output Devices

Processing Device

CPU

Operating Software

Language Translator

EX: Window

sCompil

er

Ex: MS- Word

Utility softwareEx: Norton Antivir

us

KeyboardMouseTouchpad JoystickTouch screenScannerMicrophoneBarcode Reader

PrinterProjectorLCDPlotterMonitor

HARDWAREThe physical Components of

computer system is called hardware.

Hardware is of three types and they are:1) Input Devices2) Output Devices3) Processing Device

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SOFTWARE Software is a set of instructions that

directs the computer to process information.

Software are of three types:

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Software

Application software

System software

Utility Software

SYSTEM SOFTWARE This software is used by the system. System

Software is also the Different operating system.

For example: i. Windows XP/ Vista/ 7/ 8/ 8.1/ 10 ii. Linux iii. DOS iv. Unix v. Language Translator i.e. Compiler

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UTILITY SOFTWARE It is used for the management of computer

hardware and application software installed on a computer.

For example: i. Disk Fragment ii. Disk cleaners iii. Backup Programs iv. Anti-Virus programs v. Disk File Recovery

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APPLICATION SOFTWARE It is set of programs designed for specific

uses or to perform specific tasks. For example: i. Ms.- word ii. Front Page iii. GIMP iv. Adobe Reader v. Adobe Photo Shop

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COMPUTER MEMORY UNITS 1 NIBLE=4 BIT 1 BIT=0/1 1 BYTE=8 BITS 1 KB=1024 BYTES 1 MB= 106

1 GB=1024 MB1TB=1024 GB1 PB=1024 TB

1 EB=1024 PB

1 ZB=1024 EB

1 YB=1024 ZBBack

THANK YOU