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172 Appendix A:
172
Appendix A: The Automatic Memory Stack
The Automatic Memory Stack
172
172
Appendix A:
Appendix A:
The Automatic Memory Stack
The Automatic Memory Stack
Termination of Digit Entry
Termination of Digit Entry
Termination of Digit Entry
Termination of Digit Entry
The first digit keyed in after digit entry has been terminated
already in the displayed X-register. Digit entry is automatically terminated when
any key is pressed (except for digit entry keys — digit keys,., Þ, and Æ —
and prefix keys — f, g,?, :, and ().
Stack Lift
Stack Lift
Stack Lift
Stack Lift
When the stack lifts, the number in each stack register is copied into the register
above, and the number formerly in the T-register is lost. The number formerly in the
X-register is then contained in both the X-register and the Y-register.
When a number is entered into the displayed X-register — either from the
keyboard, from a storage register (using :), or from the LAST X register (using
F) — the stack
usually
before a number is entered was one of the following: \, O, _, ^, A or
C.
If one of these keys was the last key pressed, the number in the displayed
*
X-register is replaced when a new number is entered.
Rearranging Numbers in the Stack
Rearranging Numbers in the Stack
Rearranging Numbers in the Stack
Rearranging Numbers in the Stack
The
The
key
key
The
The
key
key
Pressing ~
exchanges
Y-registers.
Certain functions (Ò, Ï, !, E, V, Ý, #, Ö, v, R, and Q)
return answers to the Y-register as well as to the displayed X-register. The ~ key,
since it exchanges the number in the Y-register with that in the displayed X-register,
is used to display the second number calculated.
The
The
The
The
Key
Key
Key
Key
When d (
roll down
stack register is copied into the register below, and the
number formerly in the X-register is copied into the
T-register.
*
In addition, the stack does not lift when a number is entered if the last operation performed
was storing a number into a financial register. For example, the stack will
number is entered following the sequence 100000$, but
following the sequence 100000$M. Note also that although the stack lifts when \ is
when a number is entered
pressed, it does not lift
lifts first. The stack does
the numbers in the X- and
) is pressed the number in each
after \ is pressed.
replaces
the number
not
lift if the last key pressed
not
lift when a
will
lift when a number is entered
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