HP 82153A User manual

HP 82153A - Wand Owner Manual - page 1
HP 82153A
Wand Owner’s Manual
April 1980
82153-90001 Rev. C
Printed in U.S.A. © Hewlett-Packard Company, 1980

HP 82153A - Wand Owner Manual - page 2
Contents
5
5
6
6
6
7
8
8
9
10
11
11
11
12
13
13
16
17
18
19
23
29
31
53
69

HP 82153A - Wand Owner Manual - page 5
Introduction
The HP 82153A Wand enhances your HP-41C system by adding a new dimension to calculator control. The wand lets you take
advantage of bar coded HP-41C programs, data and even individual HP-41C calculator functions. So that you can fully use the
wand’s capabilities in your HP-41C system, take time to work through the few pages in this manual. You will find the wand simple to
operate, yet useful in a wide range of applications.
Plugging the Wand Into the HP-41C
1. Make sure the HP-41C is turned off.
2. Remove the port cap from any unused port. (The wand should always be
plugged into a higher numbered port than any memory modules you may be
using.)
3. Insert the wand interface module into the empty port. Push it into the
calculator until it snaps firmly in place.

HP 82153A - Wand Owner Manual - page 6
Removing the Wand From the HP-41C
1. Turn off the HP-41C!
2. Pull the wand interface module straight back until it is clear of the port. Do
not pull on the cord.
3. Replace the port cap.
Getting Started
Part of the wand’s uniqueness among calculator products is the degree to which you directly control factors that determine wand
performance. The rate and consistency of your scan speed, the angle and constancy of tilt you maintain, and your ability to keep the
wand tip within the top and bottom edges of the bar code rows all influence your results with the wand. Still another factor that
impacts wand performance is the quality of the bar code itself. Well-defined bar images that contrast sharply with the print medium
produce the best results. Worn, damaged, or poorly printed bar code can hinder or prevent successful wand use.
How to Operate the Wand
The bar patterns in HP-41C bar code rows are coded forms of programs, data, or functions. The information in the bar code is read
into the calculator by scanning the bar code with the tip of the wand. Although you can scan in either a left to right or right to left
direction, you may notice slightly better results using the left to right scan direction.
1. Hold the wand in a comfortable position. The wand performs best when
tilted between 10° and 20° in any direction.

HP 82153A - Wand Owner Manual - page 7
2. Press the recessed scan switch and lightly place the wand tip on the paper.
The tip should be placed about 1 cm (approx. 0.4 in.) from the first bar in the
row.
3. Scan the bar code at a rapid and uniform speed. (Avoid the tendency of many
new users to scan too slowly, which can prevent the wand from processing
the bar code.)
4. Keep the wand tip in continuous contact with the paper until you scan past
the last bar in the row. If you are new to wand-type devices, you may
experience scan errors frequently the first few times you use the wand.
However, taking some time to practice scanning bar code will help you
develop a scan technique that achieves satisfactory results.
Note: To conserve battery power, keep the scan switch pressed only while
you are scanning a row of bar code.
After each scan the HP-41C normally responds by sounding a short scan tone. But if the system detects an error during a scan, the
HP-41C responds instead with a prolonged scan error tone and, in most cases, a displayed error message. Appendix A, Errors and
Messages, describes error conditions and error recovery. If the HP-41C does not respond to a scan, check your scan angle and rescan
the row more carefully.
Using the Paper Keyboard
The Wand Paper Keyboard contains bar code that allows you to execute the individual functions resident in the HP-41C and its
peripherals.* Each function is scanned as a separate row, allowing you to use the wand for executing system functions you would
otherwise execute from the keyboard.
Example: Scan the following bar code to execute the indicated functions. (The example assumes a FIX 4 display setting.)
HP-41C
Function
Paper Keyboard
Bar Code Display
PI 3.1416
PI
STO STO _ _
STO
0STO 0 _
0
*The HP 82104A Card Reader, the HP 82143A printer, and the HP 82153A Wand.

HP 82153A - Wand Owner Manual - page 8
HP-41C
Function
Paper Keyboard
Bar Code Display
13.1416 Pi stored in R01.
1
CLX 0.0000 Clears display.
CLX
RCL RCL _ _
RCL
0RCL 0 _
0
13.1416 Recalls pi to display.
1
CLX 0.0000 Clears display.
CLX
You may want to experiment further with the paper keyboard by executing functions you use often, or by scanning the bar coded
ALPHA characters needed to spell your name. If you use certain portions of the paper keyboard frequently, you may want to try using
some of the pressure-sensitive bar code labels included with your wand to construct a personalized paper keyboard layout.
Note: You can initiate the assignment of a function to an HP-41C keyboard location using the wand and paper keyboard.
However, to complete the operation, you must press the HP-41C key to which you want the function assigned.
Protecting Bar Code
Without protection, bar code will wear with use. To protect your bar code, place one of the transparent sheets you received with the
wand over the bar code, glossy side down, before you begin scanning. If you want to use other types of protective coverings for your
bar code, choose those that will not present a glossy surface to the wand tip. A glossy surface may cause reflections that can reduce
the wand’s ability to read the bar code you are scanning.
Scanning Data Bar Code
When you scan a row of data bar code, the data is entered in the HP-41C in the same manner as when you enter data from the
keyboard. Scan the following bar code to enter the approximate speed of light in kilometers per second.
Bar Code Display Stack
299,792.5000
299,792.5
299,792.5000
Scanning two or more rows of numeric data in sequence affects the stack in the same way as keying in two or more numbers.

HP 82153A - Wand Owner Manual - page 9
Bar Code Display Stack
6.1413
6.1413
299,792.5000 First data entry.
6.1413 Second data entry.
299,792.5000
X Y
6.1413 Contents of X- and Y-
299,792.5000 registers exchanged.
0.0000 Clears the display.
CLX
To load bar coded numeric or ALPHA data lines in program memory, set the HP-41C to PRGM mode, then scan the data bar code.
Numeric data is stored in program memory as a numeric entry. ALPHA data is stored in program memory as an ALPHA string.
Scanning Program Bar Code
HP-41C program bar code is listed in the following format:
ROW 1 (1 – 6) –Row number
—Program line numbers
ROW 2 (6 – 12) Corresponding to This Row
The occurrence of program line number 6 twice, i.e., at the end of row 1 and the beginning of row 2, indicates that the bar code for
the function on program line 6 is divided between the two rows. To load a bar coded program into your HP-41C:
1. Ensure that there is enough space in program memory to load the program. (The number of registers required to store the
program is printed above the first row of bar code.)
2. Scan the rows of barcode sequentially, beginning with row 1. After each
row is scanned, the calculator should sound the scan tone and prompt you
for the next line with:
W: RDY nn
Where nn is the number of the next bar code row to be scanned.
If the HP-41C sounds the scan error tone while you are scanning program bar code, refer to appendix A, Errors and Messages.
After you scan the last row of program code, the message W: WORKING temporarily appears in the display, then the normal display
appears. (The HP-41C is set to line 01 of the program.) Scanning a new program clears the last program in memory. However, if you
want to append the new program to those already in memory, execute GTO · · before scanning the new program.

HP 82153A - Wand Owner Manual - page 10
Example: The following bar code program calculates the volume of a cylindrical tank given the tank’s diameter and length. Using the
procedure described above, load the program into your HP-41C.
PROGRAM REGISTERS NEEDED: 9
ROW 1 (1 – 3)
Display W: RDY 02
ROW 2 (3 – 9)
Display W: RDY 03
ROW 3 (10 – 14)
Display W: RDY 04
ROW 4 (15 – 18)
Display W: RDY 05
ROW 5 (18 – 20)
Display W: WORKING, then 0.0000.
Ensure that the HP-41C is not in PRGM mode, then use the following bar code to execute the program to calculate the volume in
cubic meters of a tank 3.4 meters in diameter and 4.6 meters long.*
Bar Code Display
DIAMETER?
XEQ VOL
LENGTH?
3.4
VOLUME = 41.8
4.6
0.0000 Clears the display.
CLX
A program scan session can be terminated by pressing the or R/S keys. The partially loaded program is left in memory.
Bar Coding Programs Using Pressure-Sensitive Labels
Pressure-sensitive bar code labels are available for every function built into the HP-41C and its peripherals. Using these labels you
can save time by having immediate access to the bar code you need rather than having wait for bar code produced through other
sources. Pressure-sensitive labels are particularly useful when you want to rapidly
*This program assumes flag 21 (printer enable flag) is cleared if the printer is not plugged in.

HP 82153A - Wand Owner Manual - page 11
assemble bar coded program listings or create customized HP-41C configuration instructions for your own unique applications.
Using Pressure-Sensitive Labels. Where labels are to be used to load program bar code, first write and check your program to
reduce the changes of having to make later changes. Then, one by one, remove the needed labels from the label sheet and apply them
to a worksheet. Avoid creases in the labels as the wand may detect them in the bar code and respond with an error condition.
Layout and Scanning. Because each label is processed individually by the wand,
a row of bar code labels cannot be scanned as rapidly as a row of standard program
code. For this reason, ensure that the scan tone indicating a good read, sounds
sounds after each label is scanned. If you find it difficult to maintain a comfortable
speed while scanning labels in a row format, try a columnar format. Scanning
labels in a column normally allows the wand sufficient time between scans to
prevent any error due to insufficient processing time.
One of the protective transparent sheets you received with the wand should be
placed over any set of labels you are going to scan. The transparent sheet will
protect the labels and reduce the possibility of the wand reading label edges as bars
and causing an error condition.
Wand Functions
The wand functions are contained in the wand circuitry and become active in the HP-41C system whenever the wand is plugged into
the HP-41C. Wand functions may be executed manually or under program control in the same manner as other HP-41C functions. All
can be terminated early by pressing or R/S keys.
WNDDTA
The WNDDTA (wand data) function halts a running program to let you input a single row of numeric or ALPHA data. When WNDDTA
is executed, the HP-41C prompts you by displaying
W: SCAN DATA
After you scan a row of data bar code, program execution resumes.
WNDDTX
The WNDDTX (wand data by x) function, like WNDDTA , halts a running program to let you scan data bar code. However, under WNDDTX
control, you can load an entire set of data directly into one or more of the HP-41C’s storage registers. WNDDTX uses the data control
number you place in the X-register to specify the storage registers to be used.

HP 82153A - Wand Owner Manual - page 12
How WNDDTX works:
1. Using the following format place a data control number into the X-register.
bbb.eee
bbb is the beginning (lowest numbered) data storage register address used and eee is the ending (highest numbered) data
storage register address used. The bbb portion can be less than three digits. The eee portion must be three digits. The absolute
value of bbb.eee is used to select the series of consecutively numbered data storage registers in which to store the data. For
example, when using WNDDTX with 10,020 in the X-register, the calculator stores data in 11 registers, R10 through R20.
2. Execute WNDDTX . The HP-41C then prompts you to scan the data bar code rows, one at a time, by displaying
W: SC TO nn
nn is the storage register to receive the data from the next row of data bar code scan. Each time you scan a data bar code row,
nn automatically increments by one. When data has been stored in all registers specified by bbb.eee, program execution
resumes.
When using WNDDTX to load data into only one register, simply enter that register address as bbb and omit the eee portion of the data
control number.
WNDLNK
The WNDLNK (wand link) function causes the calculator to halt program execution so that you can using the wand to load and
automatically execute a new subroutine. If the new subroutine terminates with a RTN instruction, the HP-41C will then automatically
resume execution of the original program. The new subroutine you scan replaces the last program in memory * unless one of the
following conditions applies:
1. The executing WNDLNK instruction is the last program in memory, or
2. WNDLNK is executed manually while the calculator is positioned to the last program in memory.
When WNDLNK is executed, the HP-41C prompts you with
W: SCN SUBLNK
After you scan the first row of the new subroutine, the HP-41C begins to prompt you in the same manner as other program bar code
scans, i.e., with W: RDY nn
Main Program New Program
or Subroutine
instruction
instruction
WNDLNK
instruction
instruction
LBL XXX
instruction
instruction
RTN
1. The HP-41C halts execution and prompts you with
W: SCN SUBLNK
2. You scan the new subroutine.
3. The HP-41C automatically executes the new
subroutine.
4. The HP-41C automatically resumes execution of
the main program.
*Executing GTO · · before executing WNDLNK protects all programs currently in memory from being cleared by the new subroutine.