[Fresh Wind]

RPN forever! I still use my HP-15C every day, and dread the day it dies.

If it's any consolation, you can buy a reissue of the 15C. Only one slight problem. It costs as much as a high-end smartphone.

[HartleyMBaldwin]

Yeah, I know. That’s why I hope mine lives forever. Almost 34 years so far, so it might.