HP-15c: Why so popular?

[carey]

(11-04-2023 11:16 PM)Dave Britten Wrote:  It's a shame the TI-66 didn't retain module support, or at least have the Master Library Module built in. It could have been a viable alternative (I wouldn't go as far as to say competitor) to the 15C or even the 41C to an extent.

Yes, though it's slowness might have held it back. While the original 15c was no speed demon, the TI-66 was as slow as molasses. I tried one this year and could actually watch it thinking about nearly everything. Unfortunate because otherwise a nice calculator in size, layout, and simplicity.