Calculator benchmark

[jhallen]

Not % (which I agree is useless), but %change or delta% equivalent to: (a - b)*100/b.

BTW, I think this Sharp EL-506 also has this key (look above x^2), but later models like the EL-501P don't have it.

EL-501

(08-11-2021 09:00 AM)OlidaBel Wrote:  Thank you for the exercice.

https://github.com/jhallen/calculator/wiki/HP-15c
"Like all good HP calculators, it has the %change operator."
Are you kidding ?
I never use(d) the % key, prefering typing directly hundredth. I'm not alone certainly. Probably for the same reason why this function was later hidden in a submenu.

I like(d) the HP-15C very much.