Up Until The Mid 1870s People Communicated Face To Face
Slide 4
Invented Who The Telephone ?
Slide 5
The First True Creator remains Unknown Because Several
Inventors Worked On It ? ? ? ? ?
Slide 6
Elisha Gray Alexander Graham Bell
Slide 7
Both Men Discovered It Around 1870 But Graham Bell Patented His
first
Slide 8
Bells notebook entry of 10 March 1876 describes the successful
experiment Speaking through the instrument to his assistant, Thomas
A. Watson, Bell used the telephone for the first time Bell then
uttered the famous words, Mr. Watson come here I want to see
you
Slide 9
Where DidHe Get The Idea From?
Slide 10
Meet The Telegraph Highly Successful But Highly Limited [Morse
Code] [not Portable]
Slide 11
Alexander Graham Bell Thought That A Harmonic Telegraph Would
Be More Effective
Slide 12
He Believed ThatSeveral NotesCould Be Sent Simultaneously It
can be done!
Slide 13
AndSo The Telephone Came To Be
Slide 14
How Have Telephones Impacted TheWorld We Live In ?
Slide 15
First Mobile Phone [1922]
Slide 16
By The End Of 2009 ThereWere Nearly 6 Billion Phone Users
