William Penn School
Think Quest Team #5729
|A telephone is an instrument that sends and receives information, usually
by means of electricity. The word telephone comes from Greek words
meaing far and sound. The telephone is one of our best ways to communicate.
In an emergency a telephone can save your life. You can save time
with a telephone. You can make a telephone call almost anywhere in
the world. Telephones are even used in cars, planes, ships, and on
lots of different mechanical machines.
Alexander Graham Bell invented the telephone in Boston in 1876, 120 years later there are over 360 million telephone numbers, and that figure grows each year.
||The most familiar telephone is the desk telephone, which sits on a desk, table or shelf. Some phones have option like holding multiple calls or transferring calls to other phones. An intercom allows you to talk to other people in other rooms. Speaker phones have a microphone and a loud speaker. With a speaker phone more than two people can talk in a conversation. Cordless phones do not have wires connected to them, that is why they are called cordless phones, but they still need a to have some nearness to a unit that is wired to the telephone system. Cellular phones are true wireless phones.|