HP 33S, User Manual

Page: 60 / 388

3–4
Storing Data into Variables
File name 33s-English-Manual-040130-Publication(Edition 2).doc Page : 388
Printed Date : 2004/1/30 Size : 13.7 x 21.2 cm
Clearing Variables
Variables' values are retained by Continuous Memory until you replace them or
clear them.
Clearing a variable stores a zero there; a value of zero takes no
memory.
To clear a single variable:
Store zero in it: Press 0
e
variable .
To clear selected variables:
1. Press
¹ u
{  } and use
Ø
or
×
to display the variable.
2. Press
¹ ¡
.
3. Press
Å
to cancel the catalog.
To clear all variables at once:
Press
¹ ¡
{  }.
Arithmetic with Stored Variables
Storage arithmetic and recall arithmetic allow you to do calculations with a
number stored in a variable without recalling the variable into the stack . A
calculation uses one number from the X–register and one number from the
specified variable.
Storage Arithmetic
Storage arithmetic uses
e Ù
,
e Ã
,
e ¸
, or
e ¯
to do
arithmetic in the variable itself and to store the result there. It uses the value in the
X–register and does not affect the stack.
New value of variable = Previous value of variable {+, –,
×
,
÷
} x .
For example, suppose you want to reduce the value in A (15) by the number in the
X–register (3, displayed). Press
e Ã
A. Now A = 12, while 3 is still in the
display.