100 Section 8: Program Branching and Controls
Flag 9.
An overflow condition (described on page 61) automatically sets
flag 9. Flag 9 causes the display to blink or, if a program is running, waits
until execution is complete and then starts blinking the display.
Flag 9 may be cleared in three ways:
Press
|
"
9 (the common procedure for clearing flags).
Press
−
.
This will only clear flag 9 and stop the blinking—it will
not clear the display.
Turn the calculator off. (Flag 9 is not cleared if the calculator turns
itself off.)
If you set flag 9 manually (
F
9), it causes the display to blink irrespective
of the overflow status of the calculator. As usual, a program will run to
completion before the display starts blinking. Therefore, flag 9 can be used
as a programming tool to provide a visual signal for a selected condition.
Summary of Contents for HP-15C
Page 1: ...HP 15C Owner s Handbook HP Part Number 00015 90001 Edition 2 4 Sep 2011 ...
Page 17: ...Part l HP 15C Fundamentals ...
Page 64: ......
Page 65: ...Part ll HP 15C Programming ...
Page 118: ...118 ...