HP -20S Owner's Manual page 30

[x] 1.0823 2
B
RCL
1
() (RCL] 2
=]
1.0823
67.8602
67.8602
62.7000
1.0823
0.7699
Stores 1.0823 in R,.
Calculator awaits regis-
ter number.
Recalls contents of R;.
Recalls contents of R,.
Exponentiation is done
before division.
To cancel store or recall after pressing or [RCL], press or (4].
Clearing Registers. Press (] to clear all registers. To clear an
individual register, store 0 in it. It is unnecessary to clear a register
before storing a value since n replaces the previous value with
the new value.
Storage Register Arithmetic. This table describes the arithmetic
operations that can be performed on numbers stored in registers. The
result is stored in the register.
Keys New Number in Register n
n old number + displayed number
[STO])(=] n old number — displayed number
[STO](Xx] n old number x displayed number
(sTO](+] n old number + displayed number
The following keystrokes use two registers to calculate:
1.097 x 25.6671 = ?
1.097 x 35.6671 = ?
28 2: Arithmetic and Storage Registers