KK-15C Lite 1.0 - is the RPN scientific calculator that emulates the functions of Hewlett-Packard's handheld HP-15C Advanced Programmable Scientific Calculator. This Lite version of KK-15C features most of the HP-15C functions including complex numbers and matrix math but does not support programmable, root finder and numerical integration. KK-15C Lite requires Newton OS 2.x and will work only in landscape mode on MessagePad 120 and 130. Shareware.