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| See also: Television & Dispaly Technology, Radio Devices, Electric Batteries, Lights & Lamps |
| Invention | Inventor | Year | Patent No. |
| Answering Machine | Willy Müller | 1935 | US2,816,167 |
| Cassette Tape | Philips Company | 1962 | |
| Compact Disc (CD) | James T. Russell | 1965 | |
| Computer (Analytical Engine) | Charles Babbage | 1837 | |
| Digital Camera | NASA | 1960s | |
| Digital TAD (Telephone Answering Device) | Kazuo Hashimoto | 1984 | US4,616,110 |
| Disposable Cell Phone | Randice-Lisa Altschul | 1999 | US6,061,580 |
| DVD (Digital Video Disc) | Philips, Sony, Toshiba, Time-Warner, Matsushita Electric, Hitachi, Mitsubishi Electric, Pioneer, Thomson, JVC, IBM | 1995 | |
| Eight-Track Tape Player | William Powell Lear | 1965 | |
| Electric Blanket | | 1900s | |
| Electric Guitar | Lloyd Loar | 1923 | |
| Electronic Music | Thaddeus Cahill | 1897 | US580,035 |
| Fax Machine / Facsimile | Alexander Bain | 1842 | |
| Flashlight | David Misell | 1897 | |
| Gramophone | Emile Berliner | 1887 | US372,786 |
| Microwave Oven | Percy LaBaron Spencer | 1945 | US2,495,429 |
| Tape Recorder (magnetic) | Semi Joseph Begun | 1934 | US2,048,487
US2,048,488 |
| Telegraphone | Valdemar Poulsen | 1898 | US661,619 |
| Telephone | Alexander Graham Bell | 1876 | US174,465 |
| Videotape Recorder (VTR) | Charles Ginsburg | 1951 | US2,956,114 |
| Video Cassette Recorder (VCR) | Sony | 1971 | |
| Video Camera (Camcorder) | Sony
Kodak | 1983
1984 | |
| See also: Television & Dispaly Technology, Radio Devices, Electric Batteries, Lights & Lamps |
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