7. How Tellephones work
Telephones change human voice into electrical
signals that reach a satellite up in space. The
satellite changes the electrical signals back into
sound waves, the sound waves reach another
phone. When you pick up the phone it connects
you to a network. When you dial a phone
number the phone number is sent to the provider
asking for a connection with that number. The
provider times your connection.By kaitlyn
16. Changes in design of the phones
Phones have developed in various aspects. The
design of the phone has also developed. At first
It was simple and looked ugly. It used to be
mostly black and
gray colours in a big square shape. Telephones
people using at home was very heavy and they
have long lines on it. But now they have lots of
different
designs with various colours and various functions.
By Bella
