E
RPN: The Stack
This appendix explains how calculations take place in the automatic memory stack and how this method minimizes keystrokes in complicated calculations.
What the Stack Is
Automatic storage of intermediate results is the reason that RPN mode easily processes complicated calculations-without using parentheses. The key to automatic storage is the automatic RPN memory stack.
The memory stack consists of up to four storage locations, called registers, which are “stacked” on top of each other. It is a work area for calculations. These registers -labeled X, Y, Z, and T -store and manipulate four current numbers. The “oldest” number is the one in the
T0.00 “Oldest” number
Z0.00
Y0.00
X0.00 Displayed (most “recent” number)
The most “recent” number is in the
268 E: RPN: The Stack
File name : | Print data : 2003/7/11 |