HP HP-20S - The Alpha Keys; Introducing the Math Functions

® The last two numbers that you entered; for instance, the order of
division or subtraction.
B The results of functions that return two values. The : annunciator
indicates that two results have been returned; press (%] to
see the hidden result.
® The x- and y-values when using statistics.
The Alpha Keys
The A, B, C, D, E, and F labels have several functions. They are used
as program labels and as digits in Hexadecimal mode.
Introducing the Math Functions
One-Number Functions. Math functions involving one
number use the number in the display:
Keys: Display: Description:
89.25 9.4472 Calculates 1/89.25 .
3.57 2.36 0.4237 1/2.36 is calculated
first.
(=] 3.9937 Adds 3.57 and 1/2.36.
180 (] 70.8661 Converts 180 centi-
meters to inches.
1: Getting Started 15