RPL Programming 1-45
Program: Comments:
<ED<!
Y;6E<!
IN6<Y!B!=5MS<KI!
=BM<D!3!O;LLD<!
If NAMES isn't empty,
creates a choose box using
NAMES as choice items.
K<2<B:!
#D:K!MD>SLT!
!
!
!
<=4!
<=4!
<=4!
<=4!
1!
<=4!
1!
When OK is pressed, the
second item in the NAMES
list pairs (the phone
number) is returned.
Makes it a string and
displays it.
Ends the WHILE loop, the
IF structure, and the CASE
statement.
Ends the CASE structure,
marks the end of the local
variable defining
procedure, ends the
WHILE loop, and marks
the end the program.
`OPHONES ‰
Stores the program in
PHONES.
You can delete names and numbers by editing the NAMES variable.
To improve upon this program, create a delete name routine.
Beeping to Get Attention
To enter BEEP in a program:
1. Enter a number that specifies the tone frequency in hertz.
2. Enter a number that specifies the tone duration in seconds.
3. Enter the BEEP command (!°L%OUT% L menu).
!"!…!frequency duration!S<<2!…!1!
BEEP takes two arguments from the stack: the tone frequency from level 2 and the tone duration from level 1.
Example: The following edited version of TPROMPT sounds a 440-hertz, one-half-second tone at the prompt
for data input.
Program: Comments:
"!
I<=:<K!$F!%!6=!LK4<KlI!
aa8!dQ!S<<2!
2KLM2:!
:LKDB!
Sounds a tone just before
the prompt for data input.
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