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Information Systems HSC Notes

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NOTES ON HSC INFORMATION SYSTEMS FOLLOWING FIRST 5 SYLLABUS DOT POINTS

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10 Pages Partial Study Notes > 2 Years old
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Information Systems HSC Notes
Topics this document covers:
Technology Electromagnetism Engineering Telecommunications equipment Radio electronics Telecommunications Electromagnetic spectrum Radio technology Communications system Optical fiber Radio Wireless
This is a Partial Set of Study Notes

Partial Study Notes typically cover only single topics of a unit of study or do not cover multiple topics in significant detail. They are generally less than 20 pages in length.

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Topics this document covers:
Technology Electromagnetism Engineering Telecommunications equipment Radio electronics Telecommunications Electromagnetic spectrum Radio technology Communications system Optical fiber Radio Wireless
Sample Text:
• Outline the basic pattern of the information transfer process as -Code common to both parties. Pictures, words and music are examples of codes. The sender deliberately uses agreed conventions or codes, which must be learned, to construct a message. - Message. A message to be transferred electronically may have to be coded again, so that it can alter the carrier current or wave in a systematic and consistent way. By international agreement, the two ways of doing that are by either analog or digital means. Nowadays, digital methods are preferred to analog because they are more reliable. - Transmission of coded message. Once the carrier current or wave has been coded, it is sent to the required destination. Modern communication systems use either (or both) an electric current or electromagnetic waves to carry messages. - Decoder. Two steps are now involved in ...
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