December 2001
Intermediate to advanced
656 pages
27h 19m
English
Content preview from Networking Explained, 2nd Edition
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142 Networking Explained, Second Edition
9. Tell me more about analog communication.
The term analog refers to any physical device or signal that can continuously vary in
strength or quantity, for example, voltage in a circuit. The term analog communication
refers to any method of communication based on analog principles. Typically, this term is
associated with voice transmission instead of data transmission because voice transmis-
sion facilities, such as the telephone, were initially analog-based. The “other” type of
physical communication is digital communication, which we’ll talk about later.
10. What does harmonic motion have to do with analog ...
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