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The first ever digital camera, built in 1975 by Eastman Kodak engineer Steve Sasson. It weighed 8 pounds (~3.6kg) and recorded 100x100 pixel photos to a cassette tape.
(static01.nyt.com)
More info:
- An image from the original digital camera on the prototype digital playback system, accodirg to NYTimes.
- Stephen Sasson of Eastman Kodak Invents the Digital Camera : History of Information
- Wikipedia: Steven Sasson - First self-contained digital camera
- Kodak’s First Digital Moment (Lens blog - NYTimes - WebArchive)
I read an interesting analysis: We as consumers just see pictures, but to them they were a chemical processing company. That didn't translate at all to digital pictures in any way like corporate experience, mindset, technical expertise, etc. It would have been hard to mentally make the change before it hit them in the face.