HP 35s Scientific Calculator - Manual (Page 226)

14-16 Programming Techniques
Use the above program to see the different forms of fraction display:
Loops
Branching backwards — that is, to a label in a previous line — makes it possible to
execute part of a program more than once. This is called looping.
  
  
  
  
  
Keys:
(In RPN mode)
Display: Description:
F 
value
Executes label F; prompts for a
fractional number (V).
 
value
Stores 2.53 in V; prompts for
denominator (D).
 

 Stores 16 as the /c value. Displays
message, then the decimal number.

 
 
  Message indicates the fraction
format (denominator is no greater
than 16), then shows the fraction.
indicates that the numerator is "a
little below" 8.

 
 
 
Message indicates the fraction
format (denominator is factor of 16),
then shows the fraction.

 
 
Message indicates the fraction
format (denominator is 16), then
shows the fraction.

 () 

 Stops the program and clears flag
10