HP 25 User Manual

20 Getting Started
Now try these problems . Notice th at for each problem you only
have to press mImm to ins ert a pair of numbers into the calcu-
lator-each s ubsequent operation is performed using a new
number and an a utom atically stored intermedi ate result.
To solve
(2 + 3)
10
3 (16 - 4)
14 + 7 + 3 - 2
4
Press
2
mImm
3
El
10
El
16
mImm
4
El
3
o
14
mImm
7
[±]
3
El
2
El
4
El
Display
I 0.50
136.00
1 5.50
Probl e ms that are even more complicated can be solved in the
same simple ma nner , using the automatic st or age of intermedi-
ate results . For ex ampl e, to solve (2 + 3) x (4 + 5) with a pencil
and paper , you would:

HP 25 Specifications

General

Power Source	Rechargeable battery pack
Programming Steps	49
Release Year	1975
Functions	Trigonometric, logarithmic, statistical
Type	Scientific
Dimensions	148 x 80 x 14 mm