A simple reverse polish notation calculator loosely based on my trusty HP-32SII. If you are familiar with HP RPN calculators, the operation of this calculator should seem very straightforward - albeit simplified. It can't be programmed, and it doesn't handle binary, or hexadecimal numbers. The calculator only has a bare minimum of essential functions (logarithms, power functions, and trigonometric functions). It features a fraction entry mode identical to the HP-32SII. Pressing the decimal key once activates decimal mode. Pressing the decimal key a second time activates fraction mode. But, it has a clean, simple interface with large, easy to press buttons. It has all of the functions required for quick calculations when your iPhone is handier than your computer or calculator. |