Turning 41C into 41CV

[Jim Horn]

Yes, the main '41 board is the small rectangular one that has two holes for the posts that hold the back cover in place.

My '41, if it still exists, is a very early model with all original bugs that included the ability to enter sythentic programs as-is. I also replaced its four RAMs (16 registers each in 8 pin DIPs) with the equivalent 'CV parts (actually five of those - the fifth one piggybacked on one of the four), making it a '41CV with all the early bugs. It helped to be working at HP at the time so a number of us were able to order those chips directly in-house. But the same could be done with chip swaps between '41C and '41CV main boards.

The '50g and smartphone apps blow away the '41 in capability and speed - but the '41 is still such a powerful, flexible and extensible machine that I doubt it will ever have a full successor. Viva la "Coconut" and its terrific design team!