* Programmable.

* Complex numbers.

* Expression-based calculator.

* Mathematical, physical, and chemical constants.

* Unit conversion.

* Functions for trigonometry (with inverse and hyperbolic), logarithms, and exponentiation.

* Special functions like gamma, erf, erfc.

* Statistical, bit and logic functions.

* Unlimited number of variables.

* Support for binary, octal, decimal, and hexadecimal numbers.

The manual (including screen) is available online on the PawEng webpage.