History of Telephone

Antonio Meucci born April 13,1808 in Florence,Italy. He was an Italian inventor and created the telephone but he knowledge about voice communication apparatus developer. he was developed telephone with generation of electric with coil of wire.

Alexander Graham Bell born March 3,1847 in Edinburgh, Scotland. He was become American inventor , scientist and teacher of the deaf that make accomplishment were the invention of the telephone and phonograph. He was an audiologist.

Telephone : The circuit board made from silicon. strong, high-impact resistant polymer. use the electronic technology. to test with excessive heat and humidity.