A very similar PetaPixel article with a couple more technical details: [1] In particular, it describes the reason for the first corrupted image – they had wired the four-bit output in the wrong order so that the high bit was the lowest and vice versa. Thus, all-ones still looked white and all-zeros black, but the rest of the shades were scrambled.

[1] https://petapixel.com/how-steve-sasson-invented-the-digital-...

It's a shame they didn't capture that first image. You'd think someone would have had a camera handy!

I was glad to hear Sasson found a place at Eastman-Kodak and worked there for the rest of his career.