Communication Systems

Dates of Invention

Events

Telegraph

1837

Use of morse code to send electrical signals along wires or using radio waves

Morse Code

1837

Sending text messages along telegraph wires or using radio as a series of dots and dashes

Fax Machine

1843

Digital signals are used to transmit text and images over standard telephone lines

Typewriter

1867

A mechanical or electromechanical machine for writing printed messages by means of keys to transmit ink or carbon impressions onto paper

Telephone

1876

Traditional telephone system using copper wires and fibre optics to transmit voice

Radio

1887

Amplitude and frequency modulated radio waves used to transmit voice and music

Television

1923

Transmission of images and sound using short wavelength microwaves

Electronic Computer

1942

A device that can be instructed to carry out an arbitrary set of arithmetic or logical operations automatically such as digital messaging via email, internet, etc.

Satellite

1962

Communication between base stations on Earth and satellites in geosynchronous orbits

Internet

1969

National and international communication system used to send email, data and web pages

Email

1972

Transmission of text messages using the Internet or intranet

Mobile Phone

1983

Telephone communication between a mobile handset and cell base stations