DB48X: HP48-like RPL implementation for DM42

[LinusSch]

I keep forgetting that I actually need to learn building Android apps. Which creates an obvious answer to what zero-budget db48x project I should actually attempt. Both the process and the result would be of most use to me personally if I did that.

So why... maybe I just want to look at hardware options for hours, without looking in my drawer of old phones for some reason.

Physical keyboard, you say? Most Androids happily accepts standard USB keyboards and I think that can be made use of to have the app double as a true desktop calculator. Phone screen can then be only screen, no keys... not the best aspect ratio, but with single line soft menus and landscape orientation I think three levels of the stack could be shown in a reasonably large font. Not high priority, not at all, but this possibility makes me at least a little excited - so that maybe I'll eventually get to work.