My algebra teacher was teaching the class how to program our calculators for solving the Quadratic formula stuff. I decided to apply the same basic structure to a program of my own and decided to apply it to Ham Radio antennas since the calculation was simple enough.
: Disp #"ENTER F"
: Input #F
: (234/F)*12-L (- being an the sto function)
: Disp "L EQUALS"
: Disp L
: Disp "INCHES"
The current configuration has it set up for a 1/4 wave antenna and displays length in inches. To change the type of antenna (i.e. 1/2 wave, 5/8 wave etc.) just change the 234 to the appropriate number.