HP 32SII - Manual (Page 46)

2–8 The Automatic Memory Stack
File name 32sii-Manual-E-0424
Printed Date : 2003/4/24 Size : 17.7 x 25.2 cm
† or a cancel that display and shows the X–register.
When viewing an equation, a displays the cursor at the end the
equation to allow for editing.
During equation entry, a backspaces over the displayed equation,
one function at a time.
For example, if you intended to enter 1 and 3 but mistakenly entered 1 and 2,
this what you should do to correct your error:
T
Z
Y 1 1 1 1
X
1 š 1 2 † 0 3
1 2 3 4 5
1. Lifts the stack
2. Lift the stack and replicates the X–register.
3. Overwrites the X–register.
4. Clears x by overwriting it with zero.
5. Overwrites x (replaces the zero.)
The LAST X Register
The LAST X register is a companion to the stack: it holds the number that was
in the X–register before the last numeric function was executed. (A numeric
function is an operation that produces a result from another number or
numbers, such as
< .) Pressing z Ž returns this value into the
X–register.
This ability to retrieve the "last x" has two main uses:
1. Correcting errors.
2. Reusing a number in a calculation.