A Great Invention- By Alexander Graham Bell

Big image

Meet the Inventor

Alexander Graham Bell was an influential scientist, engineer and inventor. He was born on March 3, 1847 in Edinburgh, Scotland. He died on August 2, 1922 at the age of 75. He is widely credited with the invention of the first practical telephone.
  • Bell’s mother and wife were both deaf, this had a major influence on his work.

  • Purpose

    Before the telephone, long distance communication was done with telegraph machines which were less efficient and took longer to get messages across since only dots and dashes could be communicated. Telephones have become one of the most widely used devices all around the world. The basic purpose of a telephone is communication. It is a device that makes it possible for two people who are at geographically diverse locations to converse with each other by transmitting and receiving digital form of sound.


    The telephone further improved communications and eventually led to the various communications devices used today.
    Big image

    From Then to Now

    They have evolved from rotary dial models to smart phones that we can use today to surf the internet. Modern smartphones still require electric power to operate, a microphone and speaker to translate voices into signals, and a ringer of some type to make your party aware you’re calling. But beyond that, virtually everything has changed.
    Big image