Hello,

I created a scientific programmable button operated calculator in JavaScript. It's somewhat inspired by HP calculators. What do you guys think of it?

It's got many functions, but one issue to note is that secondary (2nd, inv and hyp) functions aren't labeled on buttons, they're only shown in a mouseover tooltip.

Its programming ability is really easy, e.g. to calculate the integral of x^2 from 0 to 100, in RPN mode (first set the Alg dropdown to RPN), press PRGM, x^2, PRGM, 0, ENTER, 100, ENTER, 100, ENTER, INTEGRATE, and it should show 333333. (the second 100 is the number of steps for precision)

Please provide feedback.

It's here: http://lodev.org/jscalc/jscalc.html

Thanks!

*Edited: 17 June 2011, 4:52 p.m. after one or more responses were posted*