There was an excellent article by Benj Edwards about Computer Space and Dabney's contribution to video game history, including the invention of the "slipping co

There was an excellent article by Benj Edwards about Computer Space and Dabney's contribution to video game history, including the invention of the "slipping counter" circuit that moved onscren objects on this game and Pong: https://www.technologizer.com/2011/12/11/computer-space-and-the-dawn-of-the-arcade-video-game/ https://www.technologizer.com/2011/12/11/computer-space-and-... “Nolan came to me one time and he said, ‘On a TV set, when you turn the vertical hold on the TV, the picture will go up, and if you turn it the other way, it goes down. Why does it do that?’ I explained it to him. It was the difference between the sync and the picture timing. He said, ‘Could we do that with some control?’ I said, ‘Yeah, we probably can, but we’d have to do it digitally, because analog would not be linear.'”