HP 25 User Manual

Controlling the Display 33
Calculator Overflow
When the number in the display would be greater than 9.9999999
x
10
99
,
the HP-25 displays all 9's to indicate that the problem
has exceeded the calculator's range. For example, if you solve
(1 x 10
49
)
X (1 x 1050), the HP-25 will display the answer:
Press
m:l49mIim
m:l
50
0
Display
1 1.0000000 49
1 1.0000000 99
But if you attempt to multiply the above result by 100, the
HP-25 display indicates overflow by showing you aIl9's:
Press Display
1000 1 9.9999999 99
A display ofl OF lindicates that one of the calculator's storage
re gisters has overflowed. See section 4, Function Keys, for a
description of the HP-25 storage registers.
Error Display
If you happen to key in an improper operation, the word Error
will
ap pear in the display.
For example , try to divide 1 by 0 (the H P-25 will recognize this
as an
improper operation):
Press
ImIim
08
Display
1
1
.
0
0
I Error
You can clear the error by pressing ED or by keying another
number into the displayed X-register.
Press Display
ED ~I o _ .o _ o ______ ~
All t?ose ~perations that cause' l -= Er-r-o-r -' 1 to appear in the display
are listed
In appendix B.

HP 25 Specifications

General

Brand	HP
Model	25
Category	Calculator
Language	English