HP HP-20S - Storage Registers for Data

() 18.0278 Displays the radius.
(c] 0.0000 Clears the display.
Another use of (®] is with functions that require two numbers
separated by [INPUT]. For example, to accumulate (x,y) data pairs in
the statistical registers, enter x-value y-value (2+]. Pressing
) (before pressing [Z+]) exchanges the x-value and y-value.
Refer to page 56 for an example.
Using Storage Registers
Registers R through Ry are for storing numbers. They are
accessed using and [RCL]. When you are using the
statistics functions, R4 through Rg are used to store sum-
mation data.
n n, where n is an integer 0 through 9, copies the number in the
display to the designated register. The number is copied with full
precision.
n n copies the contents of Ry to the display. The number is dis-
played in the current display format.
The following keystrokes use R; and R, to calculate:
(27.1 + 35.6) x 1.0823
(27.1 + 35.6)1.0823
Keys: Display: Description:
271 35.6 (=] 62.7000
STO 62.7000 Calculator awaits regis-
ter number.
1 62.7000 Stores 62.7 in R;.
2: Arithmetic and Storage Registers 27