6. Transmitting & Receiving


Students learn about

Transmitting & Receiving
  • transmitting and receiving – the process that transfers information and data within and between information systems

  • hardware for transmitting and receiving 
    • communications within a computer between peripheral devices and the CPU via buses
    • the role of modems, including modulation and demodulation
    • local area networks and wide area networks

  • software for transmitting and receiving
    • communications packages
    • transmitting and receiving text, numeric, image, audio and video
    • electronic mail and its operation

  • non-computer tools for transmitting and receiving, such as mail, phone, fax and radio and television (transmit only)
  • social and ethical issues associated with transmitting and receiving
    • accuracy of data received from the Internet
    • security of data being transferred
    • net-etiquette
    • acknowledgment of data source
    • global network issues, time zones, date fields, exchange rates
    • changing nature of work for participants, such as work from home and telecommuting
    • current developments and future trends in digital communications, radio and television
    • the impact of the Internet on traditional business

Students learn to
  • differentiate between the requirements for a local area network and a wide area network
  • transfer numeric, text, image, audio and video data and discuss the time to transfer and required bandwidth
  • describe concepts of downloading, uploading and streaming
  • demonstrate sending and receiving mail, with attachments, over an e-mail system
  • select a relevant technology for a given situation to allow computers to transmit and receive data or information
  • compare and contrast computer and non-computer based communication systems
  • describe and employ net-etiquette when using the Internet
  • predict and discuss possible future trends in communications and the impact they are likely to have on the transmitting and receiving of data/information
Glossary of Terms

 Term Meaning
 OSI Model Open systems interconnection model.     A set of standards developed by the International Standards Organisation (ISO). The OSI model is a seven-layer model
 LAN Local area network. A network connecting devices over small physical distances and using the same rules of communication.
 WAN Wide area network. A network connecting devices over large physical distances.
 Router A device that directs messages to the intended receiver over the most efficient path. Routers can communicate between networks that use different protocols.
 Modem Shortened form of the terms modulation and demodulation. A device whose primary function is to modulate and demodulate signals.
 Modulation The process of encoding digital data onto an analog wave by changing its amplitude, frequency and/or phase.
 Narrowband A transmission medium that supports a single transmission channel. Compare with broadband. 
 Broadband A transmission medium that carries more than one transmission channel. Each channel occupies a distinct range of frequencies.
  




Stimulus Questions (relates to "Students Learn to")
  1. Describe the information process of transmitting and receiving in detail, including a real life example.

  2. Compare and Contrast serial and parallel communication.

  3. Identify the different ways data speed is measured. 

  4. Compare and contrast a LAN and a WAN. Describe the three type of LAN topologies available.

  5. Describe analog and digital data, preferably using diagrams.

  6. Describe at least 3 different hardware devices used for transmitting and receiving data between peripheral devices of a computer system.

  7. Describe, in detail, the operation of a modem. 

  8. Describe at least 3 different types of software used for transmitting and receiving.

  9. Explain the one advantage and one disadvantage of email software.

  10. Identify four types of non-computer tools for transmitting and receiving and describe the operation of one of these.

  11. Discuss two social and two ethical issues related to transmitting and receiving data.
Student Activity

1.  Complete the above Stimulus Questions using the following workbook
 
(NOTE: Workbook is Read Only, so save a copy in your Google Drive before completing, otherwise you will not be able to save your work

2.  Netiquette
Students to research and collaborate on the following presentation on Netiquette
Each student to create a new page