﻿ Communication Systems: Composition, Transmitting and
Receiving, Storage on Computer Disks  Electromagnetic Spectrum
Wave Properties Radio Waves Reflection and Refraction  Other
Sections   Communication Systems  Composition of Communication
Systems  Communication systems can be broken down in to several
components, each with its own specific function. The table below
explains these key components and what they do.  Encoderconverts
information to a form that can be sent. Modulatorvaries the wave
carrying the signal. Decodertranslates information to a form
that can be understood. Storagewhere information is held.
Transmittersends signals from one place to another.
Receiverpicks up the signal that has been sent to it.
Transducerchanges signal from one form to another.
Amplifierincreases the amplitude of a signal.  The diagram below
demonstrates a system by example of speech.  communication
system of speech comprising transmission, encoder, modulator,
receiver and decoder.  Transmitting and Receiving  A common m