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The Epic Interactive Encyclopedia 1996
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Epic Interactive Encyclopedia, The (1996)(Epic Marketing)[non-bootable].iso
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signal
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1992-09-02
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300b
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10 lines
A signal is any sign, gesture, sound, or
action that conveys information. Examples
include the use of flags (semaphore), light
(traffic and railway signals), radio
telephony, radio telegraphy (Morse code),
and electricity (telecommunications and
computer networks).
Subject by: Simon Wiseman