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Essay Galaxy - The Telephone
The Telephone
The telephone itself is a rather simple appliance. A microphone, called
the transmitter, and an earphone, called the receiver, are contained in the
handset. The microphone converts speech into its direct electrical analog, which
is transmitted as an electrical signal; the earphone converts received
electrical signals back to sound. The switch hook determines whether current
flows to the telephone, thereby signaling the central office that the telephone
is in use. The ringer responds to a signal sent by the central office that
causes the telephone to ring. As simple a device as the telephone, had a
mighty big impact on society during the 30's. This was due to the fact that, it
was during the 30's when telephone service became economically feasible and also
reliable.
Men and women al....
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Number Of Pages: 2 |
Number Of Words: 334 |
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