
HP 82153A - Wand Owner Manual - page 13
WNDSUB
The
WNDSUB
wand subroutine
function halts program execution so you can use the wand to scan a new subroutine.
WNDSUB
operates
in the same manner as
WNDLNK
, exept:
1. When
WNDSUB
is executed, the HP-41C prompts with
W: SCAN SUB
2. After the new subroutine is scanned, program execution resumes with the first instruction in program memory after the
WNDSUB
instruction.
Main Program
instruction
instruction
WNDSUB
instruction
instruction
The HP-41C halts execution and prompts you
with
W: SCAN SUB
You scan the new program or subroutine.
The HP-41C automatically resumes program
execution.
WNDSCN
The
WNDSCN
wand scan
function is designed for use in specialized applications involving control of the HP-41C system through
unique patterns of user-created bar code. If you are new to the HP-41C system or to the more technical aspects of bar code design and
generation, you may want to bypass this topic until a later time.
Use of
WNDSCN
involves:
1. Producing your own specialized HP-41C bar code or using the specialized labels included in the pressure-sensitive label set
shipped with your wand.* Instead of translating your bar code into HP-41C functions or data, the wand converts the binary
(base two) value of each byte (set of eight bars) of your specialized bar code into the decimal (base 10) equivalent and stores
this equivalent in one of the HP-41C’s data storage registers.
2. Creating an HP-41C program that will use the decimal equivalent from
WNDSCN
for selecting predetermined functions,
operations, or whole routines.
*
The label set shipped with your wand includes a series of one-byte labels identified with a number between 1 and 64. Each number is the decimal
equivalent of the binary value of the bar code printed on the label.
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