Introduction to Computer

Introduction to ComputerIntroduction to Computer

Computer definition

Is an electronic machine which to store and manipulate data to extract information

1-Speed

2-Resolution

3-The possibility of storage

4-Communications network

Computer Features

Computer componentsComputer components

SoftwareSoftware HardwareHardware

Hardware

1. (Processing Unit).

2. (Memory Unit).

3. (Input Units).

4. (Output Units).

5. (Storage Unit).

Control UnitControl UnitArithmetic and Logic Unit Arithmetic and Logic Unit

“ALU“ALU””

)Processing Unit(

The unit of measurement speed of the The unit of measurement speed of the CPU is Almijahrtz MHzCPU is Almijahrtz MHz

(Memory Unit)

Types of Memory

ROM RAM

Lose its contents once the device is switched off

Do not lose its contents when the device is switched off

Input UnitsInput Units

KeyboardMouseScannerBar code reader

Keyboard

Output UnitsOutput Units

MonitorPrinterSpeakers

The units are used for input and output

Touch monitor Devices and infrared units and Bluetooth modules

Internal storage units ))Hard Disks

External storage units)Floppy disk(

Storage Unit

Storage Unit

.

Storage UnitStorage Unit

CD-ROM CD-ROM Floppy DisksFloppy Disks Hard DisksHard DisksDVDDVD

.