How Clear X Works - HP 33s Owner's Manual

Filling the to with a Constant
The replicating effect of
(from T into Z) allows you to fill the stack with a numeric constant for calculations.
Example:
Given bacterial culture with a constant growth rate of 50%, how large would a
population of 100 be at the end 3 days ?
T
1.5
1.5
Z
1.5
Y
1.5
X
1.5
1
1. Fills the stack with the growth rate.
2. Keys in the initial population.
3. Calculates the population after 1 day.
4. Calculates the population after 2 days.
5. Calculates the population after 3 days.

How CLEAR x Works

Clearing the display (X–register) puts a zero in the X–register. The next number you
key in (or recall) writes over this zero.
There are three ways to clear the contents of the X–register, that is, to clear x:
Å
1. Press
~
2. Press
¹ ¡
3. Press
Note these exceptions:
During program entry,
Å
cancels program entry.
During digit entry,
2–6
RPN: The Automatic Memory Stack
File name 33s-E-Manual-1008-Publication(1st).doc
Printed Date : 2003/10/8
Ï
together with the replicating effect of stack drop
1.5
1.5
1.5
100 100
2 3
{  } (Mainly used during program entry.)
~
deletes the currently–displayed program line and
~
backspaces over the displayed number.
Size : 13.7 x 21.2 cm
register
Replicates T
1.5 1.5
1.5 1.5
1.5 1.5
150 225
4
Page : 386
1.5
1.5
1.5
337.5
5