The phone was invented by Alexander Bell. It was invented by talking into a mouth piece, which goes into a transmitter which makes a signal, that vibrates down a wire,
which sends the signal through another transmitter which changes it back to sound which comes out a small earphone
What Changes has there Been since the First Phone
The phone has developed a lot since the first phone was created by Alexander Bell. Now the phone can be carried away from the transmitter at the wall making them wireless and easy to have private conversations
The phone only used to have three digits in a phone number, but now we have seven digits because the phone has become more common and more phone numbers have been needed because there are more subscribers. Alexander Bell’s invention has changed the world for ever.
Produced by Daniel and Joseph Researched by Wikipedia Wikianswers The book: The top 10 inventions that changed the world. Wrote on the program Animation on Microsoft PowerPoint 2003