Click the green flag to start. click on the numbers 0-9, then choose your calculation function (+, - x, or /), click the 2nd number and click the equal (=) sign to find out the result. Note that 'null' appears before you enter the first number and before you enter the second... he (noamkoren) made this selection to ease the programming. C clears the calculator ... click C before your next calculation!
Thanks to noamkoren for the basic stuff. Instructions by noamkoren too. I just switched the numbers around and changed some programming.
