Communications Inventions and Discoveries
| Invention | Who invented it? | When was it invented? |
|---|---|---|
| Internet | J C R Licklider | 1962 (concept) |
| Morse code | Samuel Morse | 1837 (patent) 1844 (first message) |
| Postage stamp | Rowland Hill | 1837 |
| Postcard | John P Charlton | 1861 |
| Radio | Guglielmo Marconi (cross-Atlantic transmission) | 1901 |
| Radio Telescope | Grote Reber | 1937 |
| Satellite (artificial) | Sputnik I (U.S.S.R.) | 1957 |
| Semaphore | Claude Chappe | 1793 |
| Telegraph | W. F. Cooke & Charles Wheatstone | 1837 (patent) 1838 (public demonstration) |
| Telegraph (wireless) | Nikolai Tesla Guglielmo Marconi (first Morse code signals over 2.4.km) |
1893 (public demonstration) 1895 |
| Telephone | Alexander Graham Bell | 1876 |
| Television | John Logie Baird | 1926 (demonstration of moving object televised) |
| Transistor | William B. Shockley | 1948 (patent) |