Reverse Polish Notation (Rpn) Mode - HP 17bII+ Quick Start Manual

available memory, press
plays the number of bytes of memory remaining and the percentage of total
memory available. If memory space is limited, the message INSUFFICIENT
MEMORY displays. Refer to pages 227-229 of the user's guide for information
on managing calculator memory. To reset the Continuos Memory:
1. Press and hold three keys simultaneously: press and hold
leftmost menu key,
2. After a moment, release all three keys. The calculator displays the
message, MEMORY LOST.
R
3. Press
selected operating mode, and the selected language are not changed
by resetting the Continuous Memory.

Reverse Polish Notation (RPN) Mode

The following information is a brief overview of how RPN works. For more
detailed information about RPN and how the stack works, refer to the HP
17bII+ Financial Calculator User's Guide. In RPN mode, numbers are entered
first, separated by pressing
key. Pressing the
if the next key pressed is an operation. Each time you press an operation or
function key in RPN, the answer is calculated immediately and displayed. For
example, suppose you wanted to add two numbers in RPN, 1 and 2. Press
1H2U
diately.
There are four special registers used for storing numbers during calculations,
which are stacked on top of one another. Called the "stack," these registers
are designated X,Y, Z, and T. X is on the bottom, and T is on the top. Most
10 Getting Started
g
and hold down the
A
, and the rightmost menu key,
to return to the MAIN menu. The current time and date, the
H
H
or ENTER keys is optional after entering a number,
. The result, 3.00, is calculated and displayed imme-
i
or
ENTER, followed by an operation
key. A message dis-
R
, the
A
.