HP 35s User Manual page 224

Scientific calculator
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If you replace lines S002 and S003 by SF0 and SF1, then flags 0 and 1 are set so
lines S006 and S010 take the natural logarithms of the X- and Y-inputs.
Use above program to see how to use flags
Keys:
(In RPN mode)
S


You can try other three cases. Remember to press
 
Example:
Controlling the Fraction Display.
The following program lets you exercise the calculator's fraction–display capability.
The program prompts for and uses your inputs for a fractional number and a
denominator (the /c value). The program also contains examples of how the three
fraction–display flags (7, 8, and 9) and the "message–display" flag (10) are used.
Messages in this program are listed as MESSAGE and are entered as equations:
1. Set Equation–entry mode by pressing
2. Press
letter for each alpha character in the message; press
for each space character.
3. Press
Equation–entry mode.
14-14
Programming Techniques
Display:

value

value


()
to clear flag 1 and 0 after you try them.
to insert the message in the current program line and end
Executes label S; prompts for X
value
Stores 1 in X; prompts Y value
Stores 1 in X ;displays X value
after flag test

Displays Y value after flag test

 
(the EQN annunciator turns on).
Description:
()

and

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