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.
I remember reading about how Kodak tried to block digital cameras (even its own) so as not to compromise their own film business, only to be caught unprepared later on when the digital camera revolution came anyway and then took massive losses.
Then later they almost shut down their entire consumer film production because of digital cameras. So they were right in thinking it would massively impact them, but made some very wrong choices because of it.
It's a bit like discovering electric lighting and brushing it under the carpet, since your candle factory is blooming, while thinking/hoping that no one else will ever see a future for electric lights.
It must be one of the biggest faux pas in corporate history.
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.
It's worth noting this is the first commercially available digital camera. The digital camera aboard Landsat 1 (launched 1972) was developed in 1969, predating this by 6 years.
The Return-Beam Vidicon (RBV) sensor utilised vidicon tube instruments containing an electron gun that read images from a photoconductive faceplate similar to television cameras. The data stream received from the satellite was analog-to-digital preprocessed to correct for radiometric and geometric errors.
So... if I understand it correctly, it was an analog camera which signal was at the end converted to digital. But please correct me if I'm wrong!