All specifications are subject to change without notice 1997, Cash Register Sales, Inc.
CRS, Inc.
CRS, INC.
LIMITED WARRANTY AND DISCLAIMERS OF WARRANTY
This limited warranty has application only to buyers which buy directly from CRS, Inc.
CRS MAKES NO REPRESENTATIONS OR WARRANTIES TO BUYERS WHICH BUY THE GOODS FROM CRS DEALERS OR OTHER
PARTIES. BUYERS WHICH BUY FROM CRS DEALERS OR OTHER PARTIES SHOULD CONTACT THEM DIRECTLY FOR
INFORMATION REGARDING REPRESENTATIONS OR WARRANTIES, IF ANY.
LIMITED WARRANTY AND DISCLAIMERS
A. Cash Register Sales, Inc., (CRS) warrants the goods sold hereunder, if properly installed, maintained, and operated under normal conditions
with competent supervision, to be free from any defects in material, operation, and workmanship for a period of ninety (90) days from the
date of the invoice evidencing the sale of the goods to the buyer. The obligations of CRS, and the buyer's SOLE AND EXCLUSIVE
REMEDY hereunder shall be limited to one of the following, at CRS's option:
(I) The replacement or repair of any goods which are returned to CRS's plant, transportation charges prepaid, and there determined by
CRS to be at variance with the warranty contained herein, or
(II) In the event the goods are determined by CRS to be so defective as to preclude the correction of warranted defects by repair or
replacement, the buyer shall be entitled to a refund of the purchase price.
B. Notwithstanding any of the foregoing, CRS shall have no obligation hereunder in the event the goods become defective in whole or in part
as a result of improper installation, maintenance, or repairs not made by CRS, unauthorized modification, or as a result of removal, improper
use, abnormal operation by the buyer, or any other misuse or mistreatment of the goods.
EXCLUSIVITY OF WARRANTY
THE WARRANTY CONTAINED HEREIN IS EXPRESSLY IN LIEU OF ANY OTHER EXPRESSED OR IMPLIED WARRANTY,
INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, OR ANY OTHER
OBLIGATION ON THE PART OF CRS. ANY MODELS, DRAWINGS, PLANS, AFFIRMATIONS OF FACT, PROMISES, OR OTHER
COMMUNICATIONS BY ANY PARTY WITH REFERENCE TO THE PERFORMANCE OF THE GOODS SHALL NOT IN ANY WAY
MODIFY THE DISCLAIMERS OR EXPRESSED OR IMPLIED WARRANTY AS SET FORTH HEREIN. THE BUYER ACKNOWLEDGES
IT IS PURCHASING THE GOODS SOLELY ON THE BASIS OF THE COMMITMENTS OF CRS AS EXPRESSLY SET FORTH HEREIN.
NO AGENT OR OTHER PARTY IS AUTHORIZED TO MAKE ANY WARRANTIES ON BEHALF OF CRS OR TO ASSUME FOR CRS
ANY OTHER LIABILITY IN CONNECTION WITH PERFORMANCE OF THE GOODS HEREUNDER.
LIMITATION OF ACTIONS AND APPLICABLE LAW
Any action resulting from any breach on the part of CRS as to the goods hereunder must be commenced within one (1) year after the cause of
action is accrued. In no event shall CRS's total liability for any or all breaches of any warranty or duty exceed the purchase price of the goods to
which the breaches relate. The rights and duties of CRS and the buyer shall be determined by the laws of the State of Minnesota, and the terms
and conditions of this warranty shall be construed and considered to have been made and perform e d in the State of Minnesota.
WARNING - U.S.
THIS EQUIPMENT HAS BEEN TESTED AND FOUND TO COMPLY WITH THE LIMITS FOR A CLASS A DIGITAL DEVICE,
PURSUANT TO PART 15 OF THE FCC RULES. THESE LIMITS ARE DESIGNED TO PROVIDE REASONABLE PROTECTION
AGAINST HARMFUL INTERFERENCE WHEN THE EQUIPMENT IS OPERATED IN A COMMERCIAL ENVIRONMENT. THIS
EQUIPMENT GENERATES, USES, AND CAN RADIATE RADIO FREQUENCY ENERGY AND, IF NOT INSTALLED AND USED IN
ACCORDANCE WITH THE INSTRUCTION MANUAL, MAY CAUSE HARMFUL INTERFERENCT TO RADIO COMMUNICATIONS.
OPERATIONS OF THE EQUIPMENT IN A RESIDENTIAL AREA IS LIKELY TO CAUSE INTERFERENCE IN WHICH CASE THE
USER WILL BE REQUIRED TO CORRECT THE INTERFERENCE AT HIS OWN EXPENSE.
NOTICE - CANADA
THIS APPARATUS COMPLIES WITH THE CLASS "A" LIMITS FOR RADIO INTERFERENCE AS SPECIFIED IN THE CANADIAN
DEPARTMENT OF COMMUNICATIONS RADIO INTERFERENCE REGULATIONS.
CET APPAREIL EST CONFORME AUX NoRMES CLASS "A" D'INTERFERENCE RADIO TEL QUE SPECIFIER PAR LE MINISTRE
CANADIEN DES COMMUNICATIONS DANS LES REGLEMENTS D'INTERFERENCE RADIO.
ATTENTION
The product that you have purchased may contain a rechargeable nickel-cadmium battery. This battery is recyclable. At the end of its useful life,
under various state and local laws, it may be illegal to dispose of this battery into the municipal waste system.
Check with you local solid waste officials for details concerning recycling options or proper disposal.
Cash Register Sales, Inc.
1997
Contents
Introduction 5
About the Samsung ER-550 ....................................................................................................... 5
Using This Manual .................................................................................................................... 5
Basic Features and Functions .................................................................................................... 7
Using Flowcharts ......................................................................................................... 6
Reading Program Information ............................................................................................... 154
Glossary of Terms 155
Index 159
Samsung ER-550 Electronic Cash Register 3
Introduction
About the Samsung ER-550
Congratulations! You have selected a very flexible electronic cash register designed for years of
reliable service. Samsung ER-550 will fit many retail stores, shops and restaurants, providing fast
transaction processing, security, and detailed sales information.
The Samsung ER-550 is equipped with a unique operator screen. The operator screen allows you to
view itemized transaction information, and it provides on screen programming that is simple and
easy to use.
Using This Manual
To Get Started turn to "Getting Started" on page 17. This section covers unpacking, memory
clearing, and a few simple program procedures. After reading this section, you can start using
your Samsung ER-550. All of the functions of the register operate immediately, without
additional programming steps.
For detailed operations sequences, see "Operating Instructions" on page 29.
To generate reports and perform other manager functions see "Manager Functions" on page 69.
For detailed programming instructions, see “Programming Instructions” on page 83. In this
section you will find detailed information about many additional features that will help you solve
the special calculation problems or security issues that you might face.
To view samples of reports and balance the register see "Report Samples" on page 135.
To perform service functions, such as testing hardware and clearing totals, see "Service Mode
Flowcharts are used to supplement step by step instructions throughout this manual. For example,
the following flowchart describes how to register $1.00 into department 1:
100
1/13
This flowchart means:
1. Press numeric key 1.
2. Press numeric key 0.
3. Press numeric key 0.
4. Press department 1/13.
Follow the flowchart from left to right, pressing the keys in the order they are shown. Numeric
keypad entries are shown as square keys. Department and function keys are shown as rectangular
keys.
26 column receipt or journal printer.
Sturdy Metal Cash Drawer with removable 5 Bill/5 Coin insert.
7-position control lock.
24-hour real-time clock with automatic day and date change.
Four tax rates with value added tax (VAT) capability. Each tax rate is programmable for tax table
look-ups and/or straight percentage tax programming. Tax rate 4 can be programmed to accommodate
Canadian goods and services tax (GST).
12 Department keys with Department Shift for a total of 24 Department totals.
Operation for up to 20 clerks with separate report totals.
Employee time keeping functions for the 20 clerks.
A minimum of 70 Price Look Ups (PLUs) for open or preset item registration. (The total number of
PLUs available varies. Ask your Samsung dealer for more information.)
10 Group totals to accumulate totals of individual departments that are assigned to each group.
Check, Cash, and up to four miscellaneous tender keys for tracking charge and/or credit card sales.
Currency conversion capability for calculating sale totals in foreign currency.
Management reports, with the capability to view most reports on the register display.
Electronic Journal capability, where transaction information can be captured in register memory for
printing at a later time.
Interface for optional load cell scale, with up to 5 preprogrammed tare weights.
Interface for optional kitchen printer.
The MORE KEYS and SBTL (MORE TENDERS) keys provide additional keyboard functions by
displaying menus. Press the MORE KEYS key to select from a list of eight additional functions.
Press the key a second time to access two additional functions. Press the SBTL (MORE
TENDERS) key once to display the sale subtotal. Press again to select from a list of alternative
payment methods.
Key Description
PAPER FEED
HELP SCREEN
Numeric Keypad:
0-9, 00, and
Decimal
CLEAR
(ESC)
Department Keys
DEPT SHIFT
#/NS
@/FOR
(PRT SCREEN)
VOID ITEM
CANCEL
Press to advance the printer paper.
Press to display help information.
Use the numeric keypad to enter amounts, other numeric values.
Like a telephone keypad, each numeric key is also assigned alpha
characters, i.e. numeric '2' is assigned 'abc'. These keys are also used to
program alpha numeric descriptors for departments, PLUs, function keys
groups and printed messages.
The decimal key is used for decimal multiplication, when setting or
entering fractional percentage discounts, or when programming fractional
tax rates. Do not use the decimal key when making amount entries into
departments or PLUs.
Press to clear numeric errors made on keyboard prior to pressing the
registration key. Also press to stop the error alarm when incorrect entries
are made.
The CLEAR key doubles as an ESC (Escape) key. When you are
performing manager functions, or programming, use the ESC key to back
up, or return to the previous screen.
There are twelve department keys on the keyboard to register different
types of merchandise. (Twelve additional department classifications are
available by using the DEPT. SHIFT key, for a total of 24 department
classifications.) Departments can be used to accept open priced entries, or
can be programmed to register preset prices.
Press the DEPT. SHIFT key before pressing a department to access
departments 13 to 24.
Press to open the cash drawer when you have not already started a
transaction. Also, can be used to print any non-adding number (up to 8
digits) on the printer paper.
Enter a quantity, then press the @/FOR key to enter multiple items. Also
use to enter “split pricing” items, such as 1 item at 3 for $.89.
When pressed directly, the @/FOR key will cause the information
displayed on the screen to be printed.
Press to void (or erase) the last item entered. You can also void an item
previously entered within a transaction by pressing CLEAR, then VOID
then re-entering the item you wish to correct.
Press CANCEL to void (or erase) all items entered thus far in any
transaction.
The % key is set with a specific function, such as item discount or
surcharge; or sale discount or surcharge. The percent rate can be entered or
preprogrammed; or the percent keys can be programmed with a negative
open or preset price, thus acting as coupon keys.
A total of four % functions are available. %1 is accessed through this key;
or the %1 function and the remaining % functions can be accessed through
the MORE KEYS key.
Use to register a Price Look Up (PLU).
Press to reverse the programmed tax status of a department or PLU. For
example, by entering the appropriate tax number (four taxes are available)
and pressing the TAX SHIFT key prior to registering a taxable item, the
item will be sold without sales tax added.
Use to sign on or sign off a clerk. See "Clerk Operations" on page 31.
Press once to display the sale subtotal. Press again to select from a list of
alternative payment methods. The screen displays a menu of four
miscellaneous tender options and four currency conversion options.
Press to total a transaction paid by check. Also if the check amount is over
the amount purchased, enter the amount of the check, then press the
CHECK TEND key. The drawer will open and the cash change will be
computed.
Press to total a transaction paid by cash. Also if the cash amount tendered
is over the amount purchased, enter the amount of the tender, then press the
CASH/TEND key. The drawer will open and the cash change will be
computed.
The CASH/TEND key doubles as an ENTER key. When you are
performing manager functions, or programming, use the ENTER key to
advance to the next item or screen.
Press this key to select from a list of eight additional functions. Four %
key functions, REC ON ACCT. (received on account), PAID OUT,
RETURN, and TIME IN/OUT functions are accessed by pressing this
key. Press the key a second time to access SCALE and TARE functions.
Press to toggle from Y (yes) to N (no) when selecting program options.
When transactions contain more items than can be displayed on the screen
at one time, press the PAGE UP key to view items at the beginning of the
transactions.
When transactions contain more items than can be displayed on the screen
at one time, press the PAGE DOWN key to view items at the end of the
transactions.
V
Control Lock
OID
OFF
SERVICE MODE
REGISTER
MANAGER
CLEAR TOTALS
PROGRAM
VOID
OFF
REGISTER
MANAGER
CLEAR
TOTALS
PROGRAM
SERVICE
MODE
Use to void (correct) items outside of a sale.
The register is inoperable.
Use for normal registrations.
Use to read register reports and perform other
manager functions.
Use to read register reports and reset totals to
zero.
Use to program the register.
Use for tests and special settings.
The Samsung ER-550 includes two sets of keys that can be used to access the following key lock
positions.
Receipt or Journal Printer.
Print speed: 3.1 lines per second, bi-directional print
Columns: 26
Character Size: 9 x 7 dots.
Paper size: 57.5 mm width.
Tear off for receipt.
THANK-YOU
CALL AGAIN
DATE 08/15/1999 SUN
2/3FOR @2.99
PLU3 T1 $1.99
TAX1 AMT $0.12
TOTAL $2.11
CASH $2.11
ANNIE NO. 000001
TIME 11:27AM 01
The front display is a liquid crystal screen, allowing you to view up to 8 lines of information with up
to 20 characters per line. The display is backlit to provide excellent visibility, regardless of lighting
conditions.
When the control lock in the OFF position, the message OFF MODE is displayed and the register
can not be operated. When the control lock in the REGISTER or VOID positions the appropriate
message, VOID MODE or REGISTER MODE is displayed and the register is ready for operation.
When the control lock is in the MANAGER, CLEAR TOTALS, PROGRAM or SERVICE MODE positions, the appropriate menu is displayed.
The initial display for each control lock position is shown below:
The rear display is a 10 digit florescent display that allows your customer to monitor the tran saction
and view the sale total. The rear display can be lifted and turned for easy customer viewing.
Rear Display Information
SERVICE MODE
0. HW TEST
1. CLEAR ALL TOTALS
2. CLEAR GRAND TOTAL
3. EPROM INFO.
Department
Number
Item Count
Amount
The department number of the registration (up to 2 digits) is
displayed in the leftmost display positions.
The number of times an item has been repeated is displayed
next to the department number.
The amount of the item, subtotal or total is displayed in the
rightmost portion of the display.
Rear Display Messages
C
Sub
=
Change Due
Negative entry
Subtotal of the sale
Total of the sale
2. Located in the packing are the following items:
1 roll of paper
1 ribbon cartridge
1 rewind spindle
1 set of control keys
Operator's and Programming manual
3. Remove the cardboard protectors from the cash drawer.
4. Plug the register into a grounded outlet (three prong), insert a control key and turn the key to the
REGISTER control lock position.
Installing the Paper
1. Remove the printer cover.
Samsung ER-550 Electronic Cash Register Getting Started 17
2. For proper feeding through the print head, cut or tear a straight even edge on the end of the
paper roll. (Be sure to remove any paper with glue residue.) Place the paper roll in the paper
holder so that the paper will feed from the bottom of the roll.
3. Insert the end of the paper into the paper slot.
4. Press the PAPER FEED key until the paper comes out about 8 inches.
18 Getting Started Samsung ER-550 Electronic Cash Register
5. If you wish to use the printer to print customer receipts, pass the paper through the window of
the printer cover and replace the printer cover.
6. If you wish to use the printer to print a sales journal, insert the paper into the paper take-up
spool. Also see "Setting Receipt or Journal Printing" on page78. Wind the paper two or three
turns around the spool shaft and install the spool in the mount.
Samsung ER-550 Electronic Cash Register Getting Started 19
Installing the Ribbon Cartridge
1. Remove the printer cover.
2. If you are replacing a worn ribbon, lift up to remove the old cartridge. You must install the first
cartridge on a new cash register.
3. Insert the new ribbon cartridge firmly into place.
4. Turn the post on the ribbon cartridge to tighten the ribbon.
5. Replace the printer cover
20 Getting Started Samsung ER-550 Electronic Cash Register
Clearing Memory
This step insures that the cash register is cleared of any totals or programming. After this procedure,
the cash register is ready for programming and operation.
WARNING: This is a one time procedure. Do not repeat this procedure after
the cash register is programmed, it causes all programs and totals to be erased.
1. Unplug the register.
2. Turn the control lock to SERVICE MODE position.
3. Press and hold the 00 key (double zero key) while connecting the AC plug into a power outlet.
Continue to hold the 00 key for about 5 seconds, until the printing has completed.
OO
4. When memory is cleared, the register prints a message including the EPROM information and
the message "RAM ALL CLEAR!".
**************************
V1.01 FEB.06 1997
CHECK SUM : 6F4B
PLU/EJ : 70/1370
RAM ALL CLEAR !
--------------------------
POWER
UP
Samsung ER-550 Electronic Cash Register Getting Started 21
Basic Programming
This section covers the basic programming necessary to get your cash register running quickly. See
“Programming Instructions” on page 83 for if you wish to program options that are not included in
this section.
PROGRAMMING NOTES:
To select an option from the menu displayed on the screen, press the number
next to the option you wish to program.
If you need help, press the HELP SCREEN key. Press ESC (CLEAR) to exit
a help screen and return to the original screen.
Be sure to press ENTER (CASH/TEND) after changing a selection. If you do
not press ENTER (CASH/TEND), the change will not be accepted.
Setting the Time & Date
1. Turn the control lock to the PROGRAM position. The first page of the PROGRAM MODE
menu displays.
PROGRAM MODE
0.DEPARTMENT
1.PLU
2.SALES TAX
3.SYSTEM OPTION
4.PRINT OPTION
5.FUNCTION KEYS
6.CLERK
2. Press PAGE DOWN to view the remainder of the PROGRAM MODE menu:
PROGRAM MODE
7.LOGO DEC.
8.GROUP DESC
9.TARE WEIGHT
00.MORE
22 Getting Started Samsung ER-550 Electronic Cash Register
3.Press 00 (double zero) to view additional programming options on the PROGRAM MODE
page 2 menu.
PROGRAM MODE page2
0.CLERK I/O
1.INVENTORY(PLU)
2.INVENTORY(DEPT)
3.TIME & DATE
4.PROGRAM SCAN
5.ALL PGM SCAN
4. Press 3 to program view the SET TIME & DATE screen.
SET TIME & DATE
SET TIME : HH:MM
(MILITARY) 11:27
SET DATE : MM.DD.YY
08.15.99
5. When the arrow is pointed at the time, enter the time in military time format.
6. Press ENTER (CASH/TEND) to move the arrow to the date field.
7. Enter the date in month/day/year format. Press ENTER (CASH/TEND) to return to the
PROGRAM MODE screen. (Note: You can change the date format from MM/DD/YY to
DD/MM/YY or YY/MM/DD. See "Programming Instructions" on page 83. You must always
enter the date in MM/DD/YY format.)
Samsung ER-550 Electronic Cash Register Getting Started 23
Programming Tax
Most sales taxes can be programmed by entering an add-on tax rate percentage. You will find
instructions for programming an add-on tax rate percentage here. In some cases you can find that tax
that is entered as a percentage does not follow exactly the tax chart that applies in your area. If this
is the case, you must enter your tax using tax table programming. This method will match tax
collection exactly to the break points of your tax table. See "Programming a Tax Table" on page 95.
Important Note: After you have entered your tax program, test for accuracy
by entering several transactions of different dollar amounts. Carefully check
to make sure the tax charged by the cash register matches the tax amounts on
the printed tax chart for your area. As a merchant, you are responsible for
accurate tax collection. If the cash register is not calculating tax accurately, or
if you cannot program your tax properly from the information in this manual,
contact your Samsung Dealer for assistance.
Programming an Add-On Tax Rate Percentage
1. Turn the control lock to the PROGRAM position.
2. From the PROGRAM MODE menu, press 2 to view the TAX PROG. screen.
TAX PROG.
TAX NUMBER (1-4) 1
TAX TYPE (0-2) 0
0 : ADD-ON
1 : TAX TABLE
2 : VAT
3. When the arrow is pointed at the TAX NUMBER field, enter the number of the tax you wish to
program. (There are four taxes available, enter 1, 2, 3, or 4.) The arrow will move to the TAX TYPE field.
24 Getting Started Samsung ER-550 Electronic Cash Register
4. Enter 0 for an ADD-ON tax with a straight percentage rate. (See "Sales Tax Programming" on
page 93 to program the other selections, TAX TABLE or VAT.) The appropriate TAX # PROGRAMMING screen displays.
TAX #1 PROGRAMMING
TAX RATE 0.000
5. When the arrow is pointed at the TAX RATE field, enter the percentage rate for the sales tax.
For example if the tax is 6 percent, enter 6.000 or 6.0. If the tax is 7.5 percent, enter 7.500 or
7.5. If the tax is 10 percent, enter 10.000 or 10.0. Be sure to enter the decimal. Press the
ENTER (CASH/TEND) to set the rate.
6. The TAX PROG. screen will return prompting you to enter the next tax, if necessary. Continue
to program additional taxes or press CLEAR to return to the PROGRAM MODE screen.
Samsung ER-550 Electronic Cash Register Getting Started 25
j
o
v
r
f
How to Enter Descriptors in Program Mode
The ER-550 allows you to program unique descriptors for:
Departments and PLUs
Function keys
Clerks
Groups
The Logo Message
Descriptors are programmed using the numeric keys. Each numeric key on the amount key pad has
letters or another function printed under the numeral. The 1 key is labeled with "other", 0 with
"caps", 00 with "double"; and the decimal key is labeled with "space".
7
4
1
othe
0
caps
pqrs
ghi
8
5
2
abc
00
double
9
tu
wxyz
6
kl
mn
3
de
.
space
26 Getting Started Samsung ER-550 Electronic Cash Register
To Program Descriptors
1. See "Programming Instructions" on page 83 and follow the appropriate instructions to access the
screen for programming departments, PLUs, function keys, groups, or the logo descriptor.
2. Press the appropriate number key the correct number of times to assign the character you want.
Refer the table below:
KEY
ONE
TIME
TWO
TIMES
THREE
TIMES
FOUR
TIMES
FIVE
TIMES
2
3
4
5
6
7
8
9
3. Press the ENTER (CASH TEND) key to assign the character you selected. Repeat for each
character of the descriptor or message. Press the decimal key to add a space.
A B C 2
D E F 3
G H I 4
J K L 5
M N O 6
P Q R S 7
T U V 8
W X Y Z 9
Note: If you make a mistake, press ENTER (CASH TEND), then press PAGE
UP to return to the first field on the screen.
To Program Lower Case Descriptors
Press the 00 key once to lock in lower case descriptors. Press the 00 key again to return to upper
case descriptors
To Program Double Size Characters
Press the 0 key once to lock in double size characters. Each double size character takes two
standard size character positions. Press the 0 key again to return to standard size characters.
Samsung ER-550 Electronic Cash Register Getting Started 27
To Program Other Characters
1. Press the 1 key to display the first page of the OTHER ALPHA MENU:
OTHER ALPHA MENU
1. 0 7. % 13. -
2. 1 8. ^ 14. _
3. ! 9. & 15. +
4. @ 10. * 16. =
5. # 11. ( 17.
6. $ 12. ) 18. [
0
2. If necessary, press PAGE DOWN to display the second page of the OTHER ALPHA MENU:
OTHER ALPHA MENU
19. ] 24. ' 29. ?
20. \ 25. < 30. /
21. : 26. ,
22. ; 27. >
23. " 28. .
0
3. Enter the number that represents the character you wish (for example, enter 10 for an asterisk
"*"), press the ENTER (CASH TEND) key to select the character.
4. Press the ENTER (CASH TEND) again to move advance to the next character position.
Descriptor Programming Example
Program the descriptor "SODA" for department 2.
1. Turn the control lock to the PROGRAM position.
2. From the PROGRAM MODE menu, press 0 for Department.
3. Press Department 2/14 to go to the DEPT #2 PROGRAMMING screen.
4. Press the numeric 4 key four times for S; press ENTER (CASH TEND).
5. Press the numeric 6 key three times for O; press ENTER (CASH TEND).
6. Press the numeric 3 key one time for D; press ENTER (CASH TEND).
7. Press the numeric 2 key one time for A; press ENTER (CASH TEND).
8. Press ENTER (CASH TEND) to advance to the PRESET field of the DEPT #2
PROGRAMMING screen.
9. Press CLEAR to exit the DEPT #2 PROGRAMMING screen.
28 Getting Started Samsung ER-550 Electronic Cash Register
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