Scientific Calculator_

A full expression calculator: trigonometry in degrees, radians or gradians, inverse and hyperbolic functions (via 2nd / hyp), logs, powers, roots, factorial, constants, memory, last-answer recall, and a running history. Type with the keypad or your keyboard.

Notes

The calculator parses a full expression with correct precedence — 2 + 3 × 4 = 14, powers are right-associative (2^3^2 = 512), and implicit multiplication works (2π, 3sin(30)). Switch the angle unit with the DEG/RAD/GRAD key; it applies to sin/cos/tan and their inverses. 2nd turns the trig keys into sin⁻¹ etc. and ln/log/log₂ into eˣ/10ˣ/2ˣ; hyp gives sinh, and 2nd+hyp gives sinh⁻¹. % divides by 100, n! uses the gamma function so it also accepts non-integers, and Ans recalls the last result. Keyboard: digits, + − * / ^ ( ) % !, Enter = equals, Backspace, Esc = clear.