RPN83P: RPN calculator for TI-83+ TI-84+ inspired by HP-42S

[johnb]

(04-14-2024 11:30 AM)floppy Wrote:  Under windows, looks like a student TI-NSPIRE whatever graph&OS SW must be installed, a license key must exists (since I bought one as second hand, no license key so far given) = I am stuck there, too.

Have you considered reaching out to TI's support and asking what it takes to get a license key for a used Inspire? This cannot be the only scenario that leaves a user stranded. It may be as simple as providing them the serial number of your device.