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This page serves as a timeline to show when analog devices were first made with digital circuits and systems.
- 1642: Blaise Pascal invents the mechanical calculator. This calculator could work in base 6, 10, 12 and 20.
- 1820: Thomas de Colmar invents the arithmometer. Its production release in 1851 marks the beginning of the mechanical calculator industry.
- 1843: fax machine: a scanning, rasterized, digital replacement for the vectorized, analog telautograph."The Secret Life of the Fax Machine" by Tim Hunkin
- 1847 (?) : piano roll: a digital recording of which notes were played.
- 1877: gramophone record: an analog recording that more-or-less replaces the digital piano roll.
- 1920s, Bell Labs designed the first digital speaker. The product was abandoned before its release due to cost, size, unreliability, and overall impracticality. Even though many analog speakers have labels that say "digital", digital speakers today remain unavailable commercially.Digital speakers
- 1940(?) bookkeeping using Charga-Plates to imprint account numbers, rather than writing them by hand.
- 17 November 1947, Transistor: John Bardeen, Walter Brattain, and Bill Shockley at AT&T Bell Labs made the first transistor.
- 1951, Audio recording: Geoff Hill plays back the first digital audio recording of Colonel Bogey's March.
- 1970, Watch: Pulsar (watch) helped Hamilton Watch Company make real the prototype for the digital watch that Hamilton Watch Co. designed for the 1968 film 2001: A Space Odyssey. The watch was completed in 1972 and sold for $2,100 USD.Watch#Digital
- December 1975, Still image: Kodak engineer Steven Sasson creates the first digital camera, weighing eight pounds and saving images to a cassette tape. Exposure time was 23 seconds. Digital camera#Early development
- 1979 (?), Compact Disc
- March 1, 1997, Player Piano: QRS and Baldwin collaborate to produce the first MIDI-compatible player piano.
- October 1, 1998, Television: British Sky Broadcasting launches the first digital television network. British Sky Broadcasting#Move to Digital
- January 31, 2005, Credit card: Fujitsu patents the Wireless Wallet, a cell phone that doubles as an electronic credit card for more secure transactions.
- (?) digital filter
- (?) magnetic stripe card, an even more digital replacement of Charga-Plates
- (?) smart card, an even more digital replacement of magnetic stripe card
- Marguin, Jean (1994). Histoire des instruments et machines à calculer, trois siècles de mécanique pensante 1642-1942 (in French). Hermann. ISBN 978-2-7056-6166-3.
- Taton, René (1963). Le calcul mécanique. Que sais-je ? n° 367 (in French). Presses universitaires de France. pp. 20–28.
- d'Ocagne, Maurice (1893). Annales du Conservatoire national des arts et métier, 2e série, tome 5, Le calcul simplifié (in French). Paris: Gauthiers-Villars et files, Imprimeurs-Libraires.
- Chase, George C (July 1980). History of Mechanical Computing Machinery. Volume 2, Number 3. IEEE Annals of the History of Computing.