Topic 1 ( Introduction to Information Technology)

        Definition Of IT.

• The use of computer, hardware and software to store, retrieve, and manipulate information.

        Fields of IT.

• Education (Online Tuition, E-test, Educational Software)
• Finance (Online banking, Finance Investment System)
• Health Care (Surgery Simulation, Telepharmacy, Telemedicine)
• Science (Cochlear Implant, Electrodes Implant, Neural Network)
• Travel (GPS, Online Reservation System)
• Government (e-filing, UPU Online)
• Manufacturing (CAM, CAD)
• Publishing (Online Card Printing, Online Photo Printing)

        Category Of Computers.

1.       Supercomputers

• Physical Size : Full room of equipment
• Speed : Capable of processing trillions of instructions per second
• Storage : Highest storage capacity that can store complex and sophisticated applications.

     2.       Mainframes Computers

• Physical Size : Partial room to a full room of equipment
• Speed : Can process millions of instructions per second and handle a thousands of connected computers.
• Storage : Larger storage capacity that can store data, instructions, and information for business applications.

     3.        Personal Computers ( Laptop, Desktop)

• Physical Size  : Small computers that fits on a desk or fit on your lap.
• Speed : Computer based on microprocessor designed for individuals and business, capable to provide computing power for home and office environment.
• Storage : Storage capacity ranges from GB to TB that can store home and office software.

    4.       Mobile Devices

• Physical Size : Very small communication devices.
• Speed : A computer based on a microprocessor that contain built-in computing.
• Storage : Storage capacity up to GB that can store mobile applications.

    5.       Embedded Computers

• Physical Size : A tiny computer embedded into a product.
• Speed : Tiny specialized microprocessor installed in smart appliances and automobiles.
• Storage : Storage capacity normally in KB.

Topic 3 (Internet Technology)

       Definition Of Network

• A network is a collection of computers and devices connected together via communications devices and transmission media allowing computers to share resources.

      Communications Devise

• A communications devices is any type of hardware capable of transmitting data, instructions, and information between a sending devices and a receiving device.
• Examples : (cable modem, wireless modem, network cards, hubs & switches.

      Transmission Media

• Wireless or unguided transmission media : send signal through air or space.
• Examples : Twisted-pair Cable, Coaxial Cable, Fiber-Optic Cable, Communication Satellite, Broadcast radio, Cellular Radio, Infrared, Microwaves, Bluetooth.)

      Network Architecture

• The design of computers, devices and media in a network.
• Types of network architecture : Peer-to-peer (p2p) and Client-server

     Network Topology

• The layout of the computers and devices in a communication network.
• Examples : Star Network, Bus Network and Ring Network.

   Network Basics

• Networks usually are classified as a Local Area Network (LAN), Metropolitan Area Network (MAN) and Wide Area Network (WAN)

     The Internet

• A worldwide collection of networks that links millions of businesses, government agencies, educational institutions, and individuals.

  Types of Web Site

• There are five (5) types of websites : Portal, Business Website, Blog, Online Social Network and Wiki.