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2–10 RPN: The Automatic Memory Stack
T
ttt
Z
zzt
96.704
Y
96.7040
96.7040
z
X
96.7040
52.3947
52.3947
149.0987
LAST
X
ll
52.3947
T
tt
Z
zt
Y
149.0987
z
X
52.3947
2.8457
LAST
X
52.3947
52.3947
Keys: Display: Description:
96.704
)
Enters first number.
52.3947
)
Intermediate result.
{
)
Brin
g
s back display from before
.
q
)
Final result.
Example:
Two close stellar neighbors of Earth are Rigel Centaurus (4.3 light–years away)
and Sirius (8.7 light–years away). Use c, the speed of light (9.5
×
10
15
meters per
year) to convert the distances from the Earth to these stars into meters:
To Rigel Centaurus: 4.3 yr
×
(9.5
×
10
15
m/yr).
To Sirius: 8.7 yr
×
(9.5
×
10
15
m/yr).
Keys: Display: Description:
4.3
)
Light–years to Rigel Centaurus.