Kalk 1.0.7 - Kalk is a simple RPN calculator, with a 20-level stack, that knows the four basic operations plus some trig and log functions. Using Kalk is very like doing simple math on a 28- or 48-series HP calculator. As for the Apple calc, the numeric keypad of your keyboard (hope you have one) is the best choice. When you type digits, the Edit Line (E:) is turned on. You can use it like any Macintosh text field, using arrows, selecting, deleting, copying, cutting, pasting, etc. When you press Enter the Edit Line is turned off and its contents are pushed into the stack. As with HP calculators, you donﾕt need to press Enter all the times; if you use an operator in edit mode, Enter is pressed automatically for you.
