How old is the segmented digit display?

[Paul Dale]

I was quite chuffed once I figured out to do the M and W on the seven segment display on the WP 34S using two digits. I do agree that some other letters aren't ideal but I think we ended up with something quite readable.

The mixed display was both a boon and a curse. The processor includes an LCD driver and it's pushed to its limit handling the 20b/30b display. The display was probably the biggest limitation of the hardware, however the very limited battery backed RAM also came into play. Likewise, the slightly less limited flash and volatile RAM are also used to their limits.


Pauli