HP 9100B Operating & Programming Manual page 102

PROGRAMMING THE 91008
CONTINUED
PROGRAM KEYS- CONDITIONAL BRANCHING
FLOW CHART: for series 1 - 3 + 5 - 7 + 9 - - - - - oo
n
=
cu rrent term of the series
I
N
=
number of terms added
P
==
the accumu lative total of the series.
~(NO)
,
CLEAR (+ )e, (+)f
and FLAG
,,
p
N
=
1
n
,
Store P
(ACC+) N
PAUSE P
TO DISPLAY N
(-+- )n
dr
lnl
+
2
=
n
IF FLAG
~
(+)e
~
(+)f
~
z
~y
~X
(YES)
SET FLAG
~
(clears flag)
CHANGE SIGN
(-)n
(-)n
(+)n
-
ADD (-+-)n toP
-+
(+)e
use ACC+
ADD 1 to N
-+
(+)f
~
l
I
l