1.1

• Definition of ICT

  • Information Communication Technology (ICT)

  • Using digital technology to access, store and process information into an organized and understandable form.
• Internet services

  • Electronic commerce:

  buying and selling of products or services over the Internet.
• Internet services

  Electronic banking:

  customers can perform banking transactions or other services electronically
• Internet services

  Electronic government:

  a process by which a state delivers information and services electronically .
• Internet services

  Electronic learning: 


  studying via the internet.
• Internet services

  • Other:

  e-mail and data transfer
• Mobile technology

  • Refers to any device that owners can use and take with them anywhere
• Mobile technology

  • It includes mobile devices such as:

  Cellular phones, smartphones, laptop computers and Global Positioning Systems (GPS).
• Mobile technology

  • It also includes mobile communication services such as:

   Wireless internet connections, Bluetooth etc
• Office productivity applications

  • Refer to a collection of software programs indented to be used by people in order to improve productivity. • Used by offices, businesses, schools, families and individuals.
• Office productivity applications

  Examples:

  Microsoft Office which includes Word Processing, Spreadsheets, Presentation software etc.
• Desktop

  • Is a kind of personal computer.

  • Used at work or at home.

  • Is usually placed on a desk, hence its name.
• Desktop

  • Features:

  • Great performance • Ease of use (GUI) • Very fast
• Laptop


  • Is a kind of personal computer.

  • Specially designed to be transported easily because it is small in size and light-weighted.

  • Has most of the typical components of a desktop computer but also includes a rechargeable battery (2-3 hours).
• Tablet

  • A fully functional laptop but smaller in size

  • Equipped with a touch screen and/or a stylus,.

  • Is a wireless, mobile and hand-held computer.

  • Used for all main tasks as well as for taking notes.
• Smart Phone

  Used for phone calls, e-mail, internet browsing and working with mobile applications
• Digital Camera


  Used to take photographs in digital format
• • System Unit:

  It is the main PC box that houses the various parts that go together to make up the PC
• • System Motherboard:

  It is contained within the System Unit and all vital computer systems plug directly into it or via cables.
• • Processor:

  An important component for processing information
• • RAM: 


  Working temporary memory that loses its data when the computer is shut down
• • Storage:

  Internal or external devices that retain saved data
• Central Processing Unit (CPU)

  Processor or Central Processing Unit is the portion of a computer system that carries out the instructions of a computer program. • It determines how fast our computer will run. • Its speed is measured in MHz or GHz.
• Central Processing Unit (CPU)


  • intel pentium • intel core 2 duo • intel core i7
• Random Access Memory (RAM):

  • Is the main but temporary working memory used by the computer.

  • It loses its data when the computer is shut down.

  • It is where the operating system is loaded to when we switch on our computer

  • It is where our applications are copied to when we load them or where the data are initially created and held.
• Random Access Memory (RAM):


  All software (Application or Operating System) is loaded into RAM chips which are located into the motherboard.

  • Is Measured in bytes. One byte consists of 8 bits (Bit: process data in 1’s or 0’s) which represent a character.
• Random Access Memory (RAM):

  • Kilobyte (KB): 103 bytes, 1024 bytes

  • Megabyte (MB): 106 bytes, 1024 kilobytes

  • Gigabyte (GB): 109 bytes, 1024 megabytes

  • Terabyte (TB): 1012bytes, 1024 gigabytes
• Hard Disk

  • Is the main, large storage area within our computer.

  • It usually stores the operating system, application programs and data.
• Peripheral Devices

  These are any device that can be attached to our computer.
• • Input devices

  allow us to input information to the computer such as keyboard and mouse.
• Output devices

  allow us to output information from the computer such as printer and monitor.
• Computer Performance

  Many factors can have an impact on the computer’s overall performance when using computers and devices.
• Computer Performance

  • The type and speed of the CPU

  • The amount of RAM used

  • The amount of available storage space in the Hard Disk
• Hardware


  the physical, tangible items that form part of a computer system.
• Input Devices

  Keyboard

  Typing device used to issue commands and enter characters
• Input Devices

  Scanner


  Device that reads images or text and convert the data into digital information
• Input Devices

  Mouse/ Trackpad


  A pointing device used to select items and issue commands
• Input Devices

  Microphone


  A device used to digitally capture sound
• Input Devices

  Web Camera


  A video camera used to capture a digital video
• Output Devices

  Printer


  Device that prints information on paper and other materials