What’s the computer??

• computer is an electronic device that stores, processes, inputs, and outputs data to produce a result

Computer Components • It will be divided to……

Hardware Software

Introduction

Computer

Hardware (Physical

components)

Software (Programs)

Input Devices

Processing

Output devices

Operating systems

Applications

First: Hardware

• Hardware is the physical components which you can see with your eyes, touch with your hand

Hardware: can be divided to….

Input OutputProcessing

Hardware

• Input : keyboard, mouse• Processing

– C.P.U• Brain of computer• Its speed measured in hertz

– Memory : Computer has 2 memories• RAM: Random Access Memory• ROM: Read Only Memory

– Storage Devices: • Internal storage device: hard disk.• External storage device: Flash Memory-floppy disk-

CD Rom- DVD.

Second: Software

• Software is the programs it can be divided to………..

Operating systems Applications

Operating Systems

• First Program to load.• Controls Hardware And software.• Enable User to operate PC( Personal

Computer) – Examples:

• DOS: Disk Operating System• Windows: It’s a GUI (Graphical User Interface) System

– GUI: is a system that uses graphics( icons, windows, mouse, pointer, colors) to operate pc.

• Linux• Unix• Mac: Macintosh

Applications

• Programs that perform a specific tasks such as…….– Antivirus– Windows Media Player– Microsoft office:

• Word• Excel• Power point • Access

Windows Operating System

• Windows Interface

(2) Icons(2) Icons(1) Background(1) Background

(3)Taskbar(3)Taskbar

Desktop Icons

• There are 5 main icons:– My documents– My computer – My Network places– Internet Explorer – Recycle Bin

1- Desktop (Display) Properties

• Is used to change Background, Screen saver, Screen resolution.

• Right Click on desktop →Properties

1-Right click on Desktop Tabs

Dialog Box

Title bar

1-BackgroundFrom display properties select desktop tab

Chooses Background Ok

2- Screen saver

Choose screen saver

Set Time

Then press okok

settings• From settings you can change screen

resolutions

Drag this curser left and right

Then press okok

System Properties• Right click on my computer → properties• From this Dialog box you can find out:

4-Size of RAM

3-Speed Of Processor

2-Type of the processor (C.P.U)

1-Type of operating system

Window BarsTitle Bar

Menu BarStandard Button

BarAddress Bar

Task Pane

Status Bar

Scroll Bar

Title bar buttons

Minimize

RestoreDown/

Maximize

Close

Minimize (make window

small) asa button onthe task bar

Control the sizing of the

window

To close the window

Explorer Window

• You can get this window by:1. Right click on the icon → explorer 2. Select the [Folders] icon on the toolbar

• It contains two sides:– left hand pane (Folders pane) contains a ‘folders tree’,

Showing how the drives and folders linked together.– right hand pane (Contents pane) shows the folders and files

contained in the drive or folder currently selected in the Folders pane

Contents pane(Right pane)

Folders pane(Left pane)