HP -18C Owner's Manual page 42

To store or recall a number using a register:
1. Press [
STO
1 or [
RCL
I.
2. Key in 0,
1,
2, or 3.
To cancel the store or recall after you've pressed [
STO
lor [
RCL
I,
press
~.
The following keystrokes do these two calculations using two
registers.
475.6
39 .15
Keys: Display:
475 .6
[sTol1
475.60
GJ
39.15 [STO
1
2
475.60~39.15
o
12.15
560 .10
GJ
[ RCL
1
1 560. 10 +475.60
GJ
[RCL
12
1035.
70~39.
15
o
26.45
560.1
+
475.6
39 .15
Description:
Stores 475 .6 into register
1.
Stores 39 .15 (the
rightmost number) into
register 2.
Completes the
calculation 475.60 /
39.15 .
Recalls the contents of
register 1.
Recalls the contents of
register 2.
Completes the
calculation.
The [
STO
1
and [
RCL
1
keys can also be used with variables. For example,
[STO
I.-
(in the
MU%C
menu) stores the rightmost number in the
calculator line into the variable M%C. [
RCL
I.-
copies the contents
of M%C into the calculator line.
40 2: Arithmetic