Introduction-to-Computer by aliasghar84

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									INTRODUCTION TO COMPUTER
LEARNING OUTCOMES  define what is information technology  Identify computer component  Identify the right ways of using computer  Identify methods in maintaining computers

ICT
ICT is the technology required for  convert  store  protect To  process  transmit and retrieve information  information processing,  in particular  use for electronic computer  communication devices  software application

ICT
Information, Communication & Technology

Information

Information tool

The tools is to transmit Information are the telephone, television and radio.

Communication
Communication is an act of transmitting massage. It is a process whereby information is exchanged between individual using symbol, signs or verbal interactions.

Communication

Communication

Technology

Technology

What Is a Computer?
How is a computer defined?
– Electronic device operating under the control of instructions stored in its own memory
Accepts data
Raw facts, figures, and symbols

Processes data into information
Data that is organized, meaningful, and useful

Produces and stores results

What Is a Computer?
What is the information processing cycle?
    

Input Process Output Storage Communication

The Components of a Computer
What is an input device?


Hardware used to enter data and instructions

The Components of a Computer
What is an output device?


Hardware that conveys information to one or more people

The Components of a Computer
What is the system unit?


Case containing electronic components used to process data

The Components of a Computer
What are two main components on the motherboard?

Central Processing Unit (CPU)
Also called a processor The electronic component that interprets and carries out the basic instructions that operate the computer

Memory
Consists of electronic components that store instructions waiting to be executed and data needed by those instructions

The Components of a Computer
What is storage?
– Holds data, instructions, and information for future use
Storage media
Physical material on which data, instructions, and information are stored

Storage device
Records and retrieves items to and from a storage medium

The Components of a Computer
What is storage media?
Digital cameras

Portable, thin memory cards used in:

Handheld computers

The Components of a Computer
What is a floppy disk?
– Thin, circular, flexible disk enclosed in rigid plastic shell

The Components of a Computer
What is a USB flash drive?
– Provides much greater storage capacity than a floppy disk or Zip® disk

– Small and lightweight enough to be transported on a keychain or in a pocket

The Components of a Computer
What is a hard disk?
– Provides greater storage capacity than a floppy disk, Zip disk, or USB flash drive – Most are housed inside of the system unit

The Components of a Computer
What is a compact disc?
CD-ROM DVD-ROM

– Flat, round, portable metal disc

The Components of a Computer
What is a communications device?
Hardware component that  enables a computer to  send and receive data, instructions,  and information Occurs over cables, telephone lines, cellular radio networks, satellites, and other  transmission media

Types of Utility Programs
• • • File Management Diagnostic File Compression

TYPES OF UTILITY PROGRAM
TYPES
File Manageme nt Diagnostic

FUNCTION
- to organize and keep track of files to delete, copy, move, rename, view files, and manage directories or folders -to maintain computer's performance and fix system problems -To ensure that computer system is well protected from malicious data entry that might damage the system. - type of data compression that shrinks one or more files into a single file - occupies less storage space than the original files did separately

File Compressi on

Defragmentation
Fragment Fragmentation is caused by creating and deleting files and folders, installing new software, and downloading files from the Internet. The more fragmented the volume is, the slower the computer's file input and output performance will be. There are two main types of disk fragmentation : file fragmentation and free space fragmentation. Contiguous file A file with all its parts stored in one location on a disk is described as "contiguous Unmovable file Program files that is has to stay in the original place in order to function properly.

File Management
A well-designed file management structure can: make it easy to locate important files quickly keep related documents or files together make it easier to move groups of data, rather than having to search for individual files, when you move to a new machine facilitate sharing of appropriate files and protection of non-public files help you back up important data quickly

File Management
Creating New Folders Arranging Files in Folders Moving or Copying Files in Windows Explorer Renaming a File or Folder Deleting Files and Folders Safely Deleting Program Files Safely Finding Files

File management
http://www.itc.virginia.edu/desktop/ docs/fms/pc/organize.html#tools


								
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