HP HP-67

16 Meet the HP-67
And in addition, the HP-67 can be operated from its rechargeable
battery pack for complete portability, anywhere.
Now let’s take a closer look at the HP-67 to see how easy it is to
use, whether we solve a problem manually, use one of the
sophisticated prerecorded programs from the Standard Pac, or even
write our own program.
Manual Problem Solving
To get the feel of your HP-67, try a few simple calculations. First,
set the switches that are located at the top of the keyboard as follows:
Set the OFF-ON switch orf Mo~ to ON.
Set the W/PRGM-RUN switch weraM l[[[Jrun to RUN.
To
solve:
Press:
Display:
s+6=1
B
EmR@e
[
8§
+2=4
|
7-4=3 300
&
B
PEDDH
&
9%x8=72 @ETE () 72.00
< =020
Sine of 30° = 0.50
SIN'
Now let’s try something a little more involved. To calculate the
surface area of a sphere, the formula4A = 7d? can be used, where:
A is the surface area of the sphere,
d is the diameter of the sphere,
ar is the value of pi, 3.141592654.
Ganymede, one of Jupiter’s 12 moons, has a diameter of 3200 miles.
You can use the HP-67 to manually compute the area of Ganymede.
Merely press the following keys in order:
@O
3200
Diameter
of
Ganymede.
10240000.00
Square
of
the
diameter.
The
quantity
.
32169908.78
Area
of
Ganymede
in
square miles.
Press Display