Known Issues

The HP21 came out with a 12 digit display and the decimal point shared a position with one of the numbers. This gave the 21 the ability to show "low battery" in an interesting way - all of the decimal points would turn on.

Currently, the HP21 emulator has a HP67 display because I haven't yet modified it. It has 15 digits and one of those positions is used exclusively for the decimal point (which one depends on where the decimal point needs to be).

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