HP (Hewlett-Packard) 12C ユーザーズマニュアル
230 Appendix A: RPN and the Stack
File name: hp 12c pt_user's guide_English_HDPMF123E27 Page: 230 of 275
Printed Date: 2005/8/1
Printed Date: 2005/8/1
Dimension: 14.8 cm x 21 cm
Termination of Digit Entry
The first digit keyed in after digit entry has been terminated replaces the number
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 É —
and prefix keys — f, g, ?, :, and i).
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 É —
and prefix keys — f, g, ?, :, and i).
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.
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 lifts first. The stack does not lift if the last key pressed
before a number is entered was one of the following: \*, O, _ or ^. 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.
keyboard, from a storage register (using :), or from the LAST X register (using
F) — the stack usually lifts first. The stack does not lift if the last key pressed
before a number is entered was one of the following: \*, O, _ or ^. 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
The
Key
Pressing ~ exchanges the numbers in the X- and
Y-registers.
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.
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
Key
When d (roll down) is pressed the number in each
stack register is copied into the register below, and the
number formerly in the X-register is copied into the
T-register.
stack register is copied into the register below, and the
number formerly in the X-register is copied into the
T-register.
Pressing d four times successively displays the numbers in the Y-, Z-, and
T-registers and returns the numbers to their original registers.
T-registers and returns the numbers to their original registers.
*
Note also that although the stack lifts when \ is pressed, it does not lift when a number is
entered after \ is pressed.