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

[bxparks]

(11-21-2023 10:46 AM)floppy Wrote:  Interesting. Widely spread hardware.
Has the TIs possibilities for external memory storage? (PC-link or SD or..)

I am not aware of an SD card extension (although it sounds like something someone, somewhere would have hacked together). But the USB-serial link to upload the RPN83P program from the host computer to the calculator is bi-directional. That means the external storage limit of the calculator is limited only by your host computer. (Unless I misinterpreted your question...)