CS Unplugged: Modems Unplugged

Use the Sound Representation activity to explore how binary digits are converted to sound, and decoded at the other end, using a modem. Support your teaching and learning with video clips, sound files and other related resources.

Additional details

Year band(s) 5-6, 7-8
Format Web page
Core and overarching concepts Digital systems, Data representation
Australian Curriculum Digital Technologies code(s)

Explain how digital systems represent all data using numbers


Explore how data can be represented by off and on states (zeros and ones in binary)


Investigate how digital systems represent text, image and audio data using integers


Explain how and why digital systems represent integers in binary

Keywords Communication, Recollection, Modems, Binary number system, Decoding

University of Canterbury, New Zealand


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