computers.ppt

OUTLINE
 Computer Hardware
 Operating systems
 Terms
 Disk capacities
 Viruses
 Applications and Documents
 Installation/reinstallation
 Internet Applications

Computer Hardware
 Case
 Power switch
 Reset switch
 Hard drive
 Floppy
 CD/DVD
 Serial ports
 Parallel port
 USB port
 Keyboard/mouse
 Network card
 Modem
 Sound card
 Video card
 RAM
 Motherboard
 Fan
 Cables

The basic system including keyboard,
mouse and monitor.

What is in the box?
Motherboard

Typical parts of a motherboard.
ABIT SE6

Cabling
For items in or attached
to a system to work
properly they must be
securely connected.

Operating systems
 All computer systems have an operating system.
Currently, there are three dominate typical user
operating systems.
 Macintosh OS,
 Microsoft Windows OS,
 Linux.

Terms
 A: Floppy disk C: Local disk D: Local disk (partition)
 RAM = Random Access Memory. The thinking space available to a computer to
use while performing operations. The space is emptied out when the computer is
turned off.
 DIRECTORY = An organizational structure on disks to file management easier.
Directories also become a local region for the computer to hunt for other files
related to the current file.
 DOCUMENT = A file created using an application. The file is only useful using
the application that created it or a similar application that can convert it.
 APPLICATION = A program that allows a computer to perform a certain
function.

Disk capacities
 Floppy: 1.4 MB
 Hard disk: 160 GB – 2 TB
 CD 700 - 800 MB
 DVD 4.7 GB
18 GB
1 KB = 1024 BYTE
1 MB = 1024 KB
1 GB = 1024 MB
1 TB = 1024 PB
1 PB = 1024 EB

Identify and use icons,
windows, menus
 Point, click, double-click, drag & drop
 Minimize and maximize a window
 Use pull-down menus
 Select, open, and move an icon
 Select, open, move, and close a window
 Resize a window
 Scroll a window
 Activate and de-activate a window
 Start an application and create a document

Name, save, retrieve, revise a
document
 Name a document (!)
 Save a document
 Retrieve a document from floppy disk
 Retrieve a document from hard disk
 Re-name a document
 Edit and re-save a document
 Print a document
 Create and name folders
 Save, open, and place documents inside folders

Applications
 Open and work with more than one application
at a time
 To switch between them for Windows: click on the
application at the "TASKBAR" down on the screen
 Alt &TAB button

Install/reinstall and update system
software and drivers

Internet Applications
BROWSERS
 Mozilla
 Internet Explorer
http://www.vfu.bg
http: Hyper Text Transfer Protocol
edu: Education (gov, org, com, ...)

FTP (File Transfer Protocol)
 The simplest and most secure way to exchange files over the
Internet.
 FTP Client is the software that is designed to transfer files back-
and-forth between two computers over the Internet. It needs to
be installed on the computer and can only be used with a live
connection to the Internet. (Browsers, WS-Ftp, SSH, Cute-
Ftp,...)
PC ARF

Viruses
 Viruses are programs that reproduce themselves into the files of your computer
 Anti-virus software and automatic update
 Mcafee Virus Scan
Configuration of Automatic Mcafee Virus Update via FTP
http://www.math.metu.edu.tr/department/doc/virus/virus_update.html
 Current security patches applied to operating system and applications.
 Do not open any unexpected attachments that are e-mailed to you. (Particularly
“.exe” files.)

REFERENCES
 Computer Fundamentals for Teachers , Major Competencies
 Basic Computer Operation and Troubleshooting

computers.ppt

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