Texas-instruments PLUS TI-89 User Manual Page 446

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Appendix A: Functions and Instructions 429
8992APPA.DOC TI-89 / TI-92 Plus: Appendix A (US English) Susan Gullord Revised: 02/23/01 1:48 PM Printed: 02/23/01 2:21 PM Page 429 of 132
Custom
key
Custom
block
EndCustm
Sets up a toolbar that is activated when you
press
. It is very similar to the
ToolBar
instruction except that
Title
and
Item
statements cannot have labels.
block
can be either a single statement or a
series of statements separated with the “:”
character.
Note:
acts as a toggle. The first
instance invokes the menu, and the second
instance removes the menu. The menu is
removed also when you change applications.
Program listing:
:Test()
:Prgm
:Custom
:Tit
l
e "Lists"
:Item "List
1
"
:Item "Scores"
:Item "L3"
:Tit
l
e "Fractions"
:Item "f
(
x
)
"
:Item "
h(
x
)
"
:Tit
l
e "Grap
h
"
:En
d
Custm
:En
d
Prgm
Cycle
CATALOG
Cycle
Transfers program control immediately to the
next iteration of the current loop (
For
,
While
,
or
Loop
).
Cycle
is not allowed outside the three looping
structures (
For
,
While
, or
Loop
).
Program listing:
:
¦
Sum the integers from 1 to
1
00 s
k
ipping 50.
:0
!
temp
:For i,
1
,
1
00,
1
:If i=50
:Cyc
l
e
:temp+i
!
temp
:En
d
For
:Disp temp
Contents of
temp
after execution:
5000
CyclePic
CATALOG
CyclePic
picNameString
,
n
[
,
[
wait
] ,
[
cycles
]
,
[
direction
]]
Displays all the PIC variables specified and at
the specified interval. The user has optional
control over the time between pictures, the
number of times to cycle through the
pictures, and the direction to go, circular or
forward and backwards.
direction
is 1 for circular or
ë
1 for forward
and backwards. Default = 1.
1. Save three pics named
pic1
,
pic2
, and
pic3
.
2. Enter:
CyclePic
"
pic
"
,3,.5,4,
ë
1
3. The three pictures (
3
) will be
displayed automatically—one-half
second (
.5
) between pictures, for
four cycles (
4
), and forward and
backwards (
ë
1
).
4
Cylind
MATH/Matrix/Vector ops menu
vector
4
Cylind
Displays the row or column vector in
cylindrical form [r
q
, z].
vector
must have exactly three elements. It
can be either a row or a column.
[2,2,3] 4Cylind
¸
[
2
ø
2
p
4
3
]
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