Texas-instruments TI-73 EXPLORER User Manual Page 307

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Appendix A: Function and Instruction Reference
301
73A-ENG.DOC AppxA: Function/Instruction Reference, English Julie Hewlett Revised: 07/29/98 1:10 PM Printed:
05/19/99 9:03 AM Page 301 of 36
prgmname
8
CTRL
Programming command; calls
prgm
name
as a
subroutine in an existing program.
name
can be a
program not yet created.
PROGRAM:VOLUME
:Input "DIAMETER=",D
:Input "HEIGHT=",H
:prgmAREA
:A
¦
H
Ü
V
:Disp "VOLUME=",V
:Pause
PROGRAM:AREA
:D/2
Ü
R
:
p
¦
R
Ü
A
:Return
Prompt variableA
[
,variableB,
]
8
I/O
Programming command; displays specified
variable
followed by
=?
. During program execution, at each
prompt, the user enters a value or expression for each
variable
, and then presses
b
.
Y
n
functions are
not valid with
Prompt
.
PROGRAM:PROMPT
:Prompt Xmin
:Prompt Xmax
:Prompt Ymin
:Prompt Ymax
The calculator adjusts
WINDOW
variable values according to
users input.
Pt-Change(X
,
Y)
2
POINTS
Changes a points status (on or off) at (
X
,
Y
).
Pt-Change(
L
6,2)
b
Pt-Off(X,Y
[
,mark
]
)
Pt-On(X,Y
[
,mark
]
)
2
POINTS
Erases or draws a point at (
X
,
Y
) using
mark,
(
1
=
¦
;
2
=
;
3
=
+
). If
mark
is omitted, the default
mark
is
box. If you specified
mark
to turn on a point with
Pt-On(
, you must specify the same
mark
when turning
it off.
Pt-Off(3,5,2)
b
Pt-On(3,5,2)
b
Pxl-Change(row
,
column)
2
POINTS
Changes a pixels status (on or off) at (
row
,
column
);
0
row
62, and 0
column
94.
PxlChange(10,75)
b
Pxl-Off(row
,
column)
Pxl-On(row
,
column)
2
POINTS
Erases or draws a pixel at (
row
,
column
); 0
row
62,
and 0
column
94.
Pxl-Off(10,75)
b
Pxl-On(10,75)
b
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