مطالب درس تکنولوژی اطلاعات خانم دکتر پاک دامن

 

Information:

any resource such as a document, book, or other format required by the    researcher that informs, and ontributes to extending their knowledge

Technology:

Technology is a broad concept that deals with the usage and knowledge of tools and crafts

Introduction to Information Technology

What is Information Technology (IT) or Information System (IS)?

is a computerized system that processes data (facts) and produces information. This process is defined as an information processing cycle (IPC).

The information processing cycle consists of four operations:

   - input

   - process

   - output

   - storage

           IT is also defined as the  development, installation, and implementation of computer systems and applications.

Components of Information technology

1- Computers

2- Softwares

3- Data

2- Workstations (Client Servers)

3- Servers

4- Operating Systems (Platforms)

5- Netwworks

6- Telecommunications

7- Trained personnel,

8-  Procedures.

Computers:

Components of Information technology:
Computers:

Computers (hardware) can be classified into five categories:

 

Microcomputers(Personal Computers (PC))

Midrange Computers (or Minicomputers)

Mainframe Computers

Supercomputers

Servers

Computers:

Personal Computers (Microcomputers) PC:

-Nonportable: (Tower, Desktop)

-  Portable computers: (laptop, notebook, subnotebook, and penbased [handheld, PDA )

Computers:

Personal Computers (Microcomputers) PC:

-IBM compatible system
-Apple system

These two systems use different platforms (operating systems) to control the hardware.

Computers:

Personal Computers (Microcomputers) PC:

IBM Compatible uses Windows operating system developed by Microsoft.

 The Windows operating system provides a graphical user interface (GUI)and a multitasking environment. The Windows operating system—including Windows 98, Windows 2000, and Windows XP workstation

Computers:

Personal Computers (Microcomputers) PC:

IBM compatible system and Apple system

use different platforms (operating systems)

to control the hardware.

-

Computers:

Personal Computers (Microcomputers) PC:

Apple Macintosh uses a totally different operating system developed by Apple Computer.

  Newer Apple operating systems are able to run Windows-based applications.

Mainframe Computer

Midrange Computer

Microcomputer or PCs

Computer Hardwres: Outside

Computer Hardwares: Inside

Computer Accessories:

Disks

Backup Tapes

Printers (Laser, Inkjet, Dot matrix/impact)

Modem

Network Cards

Trackball

Light pen

Touch screen

Joystick

Scanner

Digital Camera

Microphone

Sound Cards

Speakers

Computer input and output devices:

Computer Peripherals

Computer Memory and Storage

RAM (Random Acees Memory

ROM (Read Only Memory)

Hard Disks

Formatting a Disk

Computer Bytes and Bits:

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