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YESSSSSS. Having one of these in high school in the 80s was awesome. No one else could use it. LOL. I lost the 15C I had, but bought the programmers' version

YESSSSSS. Having one of these in high school in the 80s was awesome. No one else could use it. LOL. I lost the 15C I had, but bought the programmers' version (16C) on steep discount at my university bookstore in about 1990 or 1991. I still have it on my desk, for random arithmetic, though I've never used it for its notional purpose. In later years, I've kept an HP clone / RPN calculator app on every device I've had, even back in the Palm days.

walnutclosefarm 4y ago
My first "pocket calculator" was an HP-45. I still have one on my desk, although I rarely use it because I don't want to burn out the LEDs, which do not age well into their 4th and 5th decades. Instead I use an HP-45 simulator on my phone. Somehow it just feels right.
technothrasher 4y ago
I had a 15C in high school as well, as my father was a geek and told me he'd only buy me a calculator if it was RPN. I loved it, but I wore it out by the time I got to college and I replaced it with a 32SII. I've still got that one, but it long since died and won't turn on.
russdill 4y ago
It's crazy how much demand there is for these. An original 15c is going for more than $200 on ebay and the limited edition re-release is going for more than $400. I was able to get the 15c re-release when they did it, wish they would have done a 16c re-release as well.
- incanus77 4y ago
  I recently received a free one of these at a garage sale. The daughter of the nuclear physicist who used it during his career had it out and said I could have it for $0.50. I didn’t have small bills or change, so she just gave it to me. I knew “of” HP calculators, but hadn’t yet deep dived into _why_ they were cool. This kicked it off for me. It’s probably on the original battery. I suspect maybe she knew it was worth a fair amount, but didn’t care. She seemed very zen with the idea of reducing the amount of unused items in her life. It was a very cool, eclectic sale by two home-based artists.

walnutclosefarm 4y ago

My first "pocket calculator" was an HP-45. I still have one on my desk, although I rarely use it because I don't want to burn out the LEDs, which do not age well into their 4th and 5th decades. Instead I use an HP-45 simulator on my phone. Somehow it just feels right.

technothrasher 4y ago

I had a 15C in high school as well, as my father was a geek and told me he'd only buy me a calculator if it was RPN. I loved it, but I wore it out by the time I got to college and I replaced it with a 32SII. I've still got that one, but it long since died and won't turn on.

russdill 4y ago

It's crazy how much demand there is for these. An original 15c is going for more than $200 on ebay and the limited edition re-release is going for more than $400. I was able to get the 15c re-release when they did it, wish they would have done a 16c re-release as well.

incanus77 4y ago
I recently received a free one of these at a garage sale. The daughter of the nuclear physicist who used it during his career had it out and said I could have it for $0.50. I didn’t have small bills or change, so she just gave it to me. I knew “of” HP calculators, but hadn’t yet deep dived into _why_ they were cool. This kicked it off for me. It’s probably on the original battery. I suspect maybe she knew it was worth a fair amount, but didn’t care. She seemed very zen with the idea of reducing the amount of unused items in her life. It was a very cool, eclectic sale by two home-based artists.