After flipping the power subsystems from the front of the board to the back and fixing up the layouts, the only parts remaining on the front of the board are the VFD, a filter capacitor, and the power fuse. Everything else is going to be mounted on the back. Thus it occurred to me that when I do most of my work with this board, I'm going to be looking at the back. That's where almost all of the components are. And once the board is mounted in the calculator's upper shell behind the keypad, the back is the only side I'll be able to see.
KiCad allows me to flip the display of the board in the pcbnew board editor. However, if I print an image of the board it's still the view from the front that gets printed. That means I'd either have to be looking at the board layout on a computer when placing parts and debugging, or mentally transpose component positions from a printed image. That didn't sound appealing.
Experiments with the world's first microprocessor
and other electronic explorations
