HP HP-10C - Page 75

Section 6: Branching and Looping 73
Keystrokes Display
”
09- 16
−kt.
'
10- 12
e
−kt
.
l1
11- 45 1
Recalls N
0
, the initial
number of milliCuries,
from R
1
.
*
12- 20
N
t
, the milliCuries of
131
I
remaining after t days.
´©
13- 42 31
Pauses to display N
t
.
4
14- 4
O+0
15-44 40 0
Adds 4 days to t.
t02
16- 22 02
Transfers program
execution to line 02, so
the new t can be recalled
to display before
beginning new
calculations.
Now we can run the program. It will pause at the beginning and end of each
loop to display each t and N
t
value. Program execution will continue
indefinitely—until we stop it. (You can run the program one step at a time—
using —if you want to follow the execution of the loop.)
Keystrokes Display
¥
0.0000
Sets calculator to Run
mode. (Display shown
assumes no results
remain from previous
calculations.)
´CLEARQ
0.0000
Clears registers R
0
through R
9
.
´•3
0.000
Sets display format to
three decimal places.
100O1
100.000
Stores N
0
in R
1
.
4
4.
Keys in t.
¦
4.000
t = 4 days.
70.711
N
4
(milliCuries of
131
I
remaining after 4 days).
8.000
t = 8 days (the half-life
of
131
I).
50.000
N
8
.
12.000
t = 12 days.