 |
First barcoding website from Romania! |
|
|
 |
| Barcode Education
» Barcode Glossary of Terms »
A B C
D E F
G H I
J K L
M N O
P Q R
S T U
V W X
Y Z |
| P |
|
Parity Bit
An element
added for let the parity of bars odd or even.
Parity Check
In many barcode
except EAN, black bar
module must be odd or
even by adding a parity bit. Parity check is, to
prevent misreading by checking its odd/even at each character.
PCS
Print Contrast Signal. The reflection
ratio of the printing color.
PCS = (Rw - Rb) / Rw
Rw = reflection ratio of the white bar
Rb = reflection ratio of the black bar
The minimum value of PCS differs by the value of Rw
(reflection rate in this case is against red light
at 660 nanometer wave length.) (See MRD)
PLU
Price Look Up. Ordinately, the price information
is not shown in the source
marked barcodes. The
sales price, of the same product, often changes by retails,
or by seasons; so it includes only the information of the
product itself. The sales prices are enterred to the store
controller, and when the product information is in/out-put
at POS Register, simultaneously, the information of the
Price (of sales) is Looked Up from
the store controller. PLU is the name for such barcodes
(See NON-PLU)
POS
Point of Sale. The information management
at the point of sale.
At the point of reading the barcode
of sales product at the POS register in the shop, by the
computer processing, sales staffs can process the cash flow,
of course, exchange the stock files, and any other information
related to the sales management.
Prefix
Originally means the prefix in grammatical use;
in case of EAN symbol,
because the 12 digits expressed by the bar is not enough,
it expresses an extra digit added to the 12-digit, by the
combination of the odd/even
parities in the left six characters
The combination of O(dd)/E(ven) for expressing the prefix
is as follows:
0 = O - O - O - O - O - O
1 = O - O - E - O - E - E
2 = O - O - E - E - O - E
3 = O - O - E - E - E - O
4 = O - E - O - O - E - E
5 = O - E - E - O - O - E
6 = O - E - E - E - O - O
7 = O - E - O - E - O - E
8 = O - E - O - E - E - O
9 = O - E - E - O - E - O
|
|
|
|