58 Function Keys
as
2
1]
lYJ
26miimJ28El
57.500
EmJ
El5
I 5170.00
103.40
103.40
I
54
.
00
I 3105.00
I
3105
.00
I
93.15
I
93.15
8078.45
Gross
placed
in
storage
register R
5
.
Deductions
for
Monday
and
Tuesday
.
Deductions
subtracted
from
total
in
storage register R
5
.
Wednesday
's tonnage.
Gross
amount
for Wednesday.
Wednesday's
gross
amount
added to total
in
storage
register R
5
.
Deduction
for
Wednesday.
Wednesday
deduction
sub-
tracted
from total
in
storage
register R
5
.
The
farmer
's total
net
income
from his
tomatoes.
(You could also work this problem using the
stack
alone,
but
it
illustrates how storage register
ar
ithmetic
works.)
Storage Register Overflow
If
the
magnitude
ofa
number
in
any
of
the eight storage registers
exceeds
9.999999999 x
10
99
,
the HP-25 display immediately
shows
~
(a
ve/flow)
to indicate
that
a storage register
ha
s
overflowed.
For
example
,
if
you use storage register arithmetic to
attempt
to
calcu
late
the
product
of
I x
10
50
and 7.5 x
10
50
in
register R
o
,
the register overflows and the display
shows
[QIJ
.
To
see
the
result
of
storage register overflow:
Press Display
050
mO
7.5050
EmJ00
1.
1.
0000000
7.5
OF
50 I
50 I
50 I
1 x
10
50
pl
aced
into storage
regi
ster
Ro.
When you mUltiplied using
storage register arithmetic,
register
Ro overflowed.
To
clear a storage register overflow displ
ay,
merely press
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