NCR 7800, User Manual, Page: 90 / 112

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Demonstration Mode
The Demonstration Mode displays a description of a product
and its price when one of four available UPC numbers (listed
in table below) are scanned. The unit will display "Your
Store" on the first line and "Present item below" on the
second line of the display.
Since the tags listed in the table may not be available, you can
present any item with a UPC label. With the fifth read of a tag
that cannot be matched, the not-on-file message is displayed:
"Sorry your item is not in our files."
In demonstration mode, scanned items are not transmitted to
the host, and no data can be received.
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Coca-Cola Coca-Cola 4963406 $2.00
Pepsi Pepsi 1201303 2 for $4.00
Polo Shirt 40140050717 $18.99
T-shirt 40140038712 3 for $10.99
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Reset (or power cycle unit)
Format must be 8-bit data or 7-bit data with space
parity for the tag file to function.
Note: