Plus42

Plus42 is an advanced scientific programmable calculator based on Free42, extending the capabilities of the iconic HP-42S. Designed for scientists, mathematicians, and engineers, it adds formula evaluation, units conversions, and expanded memory.

Features:

• Complete HP-42S compatibility with Reverse Polish Notation (RPN) computation
• Expanded multi-line LCD display with dynamic font sizing
• Algebraic expression evaluation and numerical integration
• Comprehensive unit conversion system covering scientific and engineering quantities
• Matrix algebra, complex number arithmetic, and statistical distributions