Digital Communication: Through the Years

By gcrowley

  • The telegraph

    The telegraph
    Also known as "the Morse telegraph", the telegraph used a series of dots and dashes to transmit messages.

  • The Five Needle Telegraph

    The Five Needle Telegraph
    The five needle telegraph was a communication system with needles that could be arranged to point to letters to send a message.

  • Baud

    Baud
    The baud is similar to the telegraph, but it uses a keyboard with 5 letters.

  • The Telephone.

    The Telephone.
    The telephone was an invention used to allow people to communicate from far away. It was invented by Alexander Graham Bell.

  • Carterfone

    Carterfone
    The carterfone allowed someone on the phone to talk to someone on the radio.

  • Dataphone

    Dataphone
    In 1960, At&t invented the dataphone. It is similar to the modem. It transferred computer data into analog.

  • Email

    Email
    The email was invented as a way to share things and send files.

  • ALOHAnet

    ALOHAnet
    ALOHAnet was the first wireless packet data network.

  • The flip phone

    The flip phone
    The flip phone was invented to have a portable, affordable way to communicate.

  • iPhone

    iPhone
    Probably the most impactful invention, the iPhone was a way to have access to apps, internet, and communication on the go.