Introduction to Computer
Oct 31, 2014
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
.