13–20
Programming Techniques
File name 33s-English-Manual-040130-Publication(Edition 2).doc Page : 388
Printed Date : 2004/1/30 Size : 13.7 x 21.2 cm
Indirectly Addressing Variables and Labels
Indirect addressing
is a technique used in advanced programming to specify a
variable or label
without specifying beforehand exactly which one
. This is
determined when the program runs, so it depends on the intermediate results (or
input) of the program.
Indirect addressing uses two different keys:
Ñ
(with
Ë
) and
Ò
(with
Ï
).
The variable
I
has nothing to do with
Ò
or the variable
i
. These keys are active
for many functions that take
A
through
Z
as variables or labels.
i
is a variable whose contents can refer to another variable or label. It holds a
number just like any other variable (
A
through
Z
).
Ò
is a programming function that directs, "Use the number in i to determine
which variable or label to address."
This is an
indirect address
. (A through Z are
direct addresses
.)
Both
Ñ
and
Ò
are used together to create an indirect address. (See the
examples below.)
By itself,
i
is just another variable.
By itself,
Ò
is either undefined (no number in
i
) or uncontrolled (using whatever
number happens to be left over in
i
).
The Variable "i"
Your can store, recall, and manipulate the contents of
i
just as you can the contents
of other variables. You can even solve for
i
and integrate using
i
. The functions
listed below can use variable "
i
".
STO i
INPUT i
DSE i
RCL i
VIEW i
ISG i
STO +,–,
×
,
÷
i
∫
FN d i
x
< > i
RCL +,–,
×
,
÷
i
SOLVE i
Содержание 33S
Страница 1: ... HP 33s scientific calculator user s manual H HP Part number F2216A 90020 Printed in China Edition 2 ...
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Страница 137: ...Operations with Complex Numbers 9 7 c Ù Adds L1 L2 L3 Converts vector back to polar form displays r θ ...
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Страница 255: ...Mathematics Programs 15 33 y y x x m n New coordinate system Old coordinate system 0 0 x P u y v θ ...
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