3 thoughts on “There are several levels of barcodes, how to identify?”
Naomi
A -level barcode can be well read, suitable for scanning along one line and scanning only once. B of barcodes in the readings are not as good as A -level, suitable for occasions that scans only along one line but allow repeated scanning. c -level barcode may require more repeated scanning. Usually, it is necessary to use a device that can repeat scanning and have multiple scanning lines to obtain a better reading effect. D barcode may not be read by certain equipment. To obtain good reading effect, you must use equipment that can repeat scanning and have multiple scanning lines. The F -Class is unqualified and cannot be used. Puestable the five quality levels of the "A"-"F" of the US standard test method. The "A" level is the best, the "D" level is the worst, and the "F" level is unqualified. The expansion data upc (unified product code): can only represent numbers, including five versions of A, B, C, D, E The last one is 1.5 "height 1" for the verification position, and the background is mainly used in the United States and Canada to be used in industrial, medicine, warehouse and other departments. When UPC is decoded as twelve-bit, the definition is as follows: First digit = digital identification (established by UCC (unified code committee)). One) No. 7-11 = The only manufacturer's product code is 12th in the 12th digit = verification digit (using for error detection) Code 3: Table 43 characters for letters, numbers, and other symbols: A -Z, 0-9, -. $/ %, The length of the pass barcode is variable. Usually, the "*" number is used as the start, the terminal code of the terminal does not require the code density of 3-9.4 characters/ Each inch, the blank area is 10 times that of narrow strips, which is used in industrial, books, and automation management. code 128: represents high density data, string variable length, and the symbol contains school check code. There are three different versions: A, B, and C can be used in 128 characters in A, B, or OR, respectively. The three string sets of C are used for industry, warehouses, and retail wholesale. -OF-5 (i2 of 5): can only indicate the number 0 -9 variable length, continuous barcode, all bars and air indicate the code, the first number starts from the strip, the first number of numbers, the first number The two numbers consist of the blank area 10 times wider than the narrow bar. It is used in commodity wholesale, warehouses, airports, production/packaging recognition, and industry. The density in the one -dimensional barcode is the highest. Reference materials: Baidu Encyclopedia-Barcode
Barcode recognition rate levels are divided into five levels of A, B, C, D, and F from high to low. The highest level A, the worst level D, F -class is unqualified. The higher the recognition rate, the easier it is to be recognized. Zhonglang barcode generation software uses the driving module optimization algorithm, which strengthens the output accuracy control of the barcode. The barcode recognition rate can reach A -level
Usually the US standard detection method divides the level of barcodes from high to low as A, B, C, D, F, the highest level, the worst level D, F -class is unqualified. Recognize. Barcode generating software uses the driving module optimization algorithm, which strengthens the output accuracy control of the barcode. The generated barcode recognition rate can reach A -level, as shown in the figure:
A -level barcode can be well read, suitable for scanning along one line and scanning only once.
B of barcodes in the readings are not as good as A -level, suitable for occasions that scans only along one line but allow repeated scanning.
c -level barcode may require more repeated scanning. Usually, it is necessary to use a device that can repeat scanning and have multiple scanning lines to obtain a better reading effect.
D barcode may not be read by certain equipment. To obtain good reading effect, you must use equipment that can repeat scanning and have multiple scanning lines. The F -Class is unqualified and cannot be used.
Puestable the five quality levels of the "A"-"F" of the US standard test method. The "A" level is the best, the "D" level is the worst, and the "F" level is unqualified.
The expansion data
upc (unified product code):
can only represent numbers, including five versions of A, B, C, D, E The last one is 1.5 "height 1" for the verification position, and the background is mainly used in the United States and Canada to be used in industrial, medicine, warehouse and other departments.
When UPC is decoded as twelve-bit, the definition is as follows: First digit = digital identification (established by UCC (unified code committee)). One) No. 7-11 = The only manufacturer's product code is 12th in the 12th digit = verification digit (using for error detection)
Code 3:
Table 43 characters for letters, numbers, and other symbols: A -Z, 0-9, -. $/ %, The length of the pass barcode is variable. Usually, the "*" number is used as the start, the terminal code of the terminal does not require the code density of 3-9.4 characters/ Each inch, the blank area is 10 times that of narrow strips, which is used in industrial, books, and automation management.
code 128:
represents high density data, string variable length, and the symbol contains school check code. There are three different versions: A, B, and C can be used in 128 characters in A, B, or OR, respectively. The three string sets of C are used for industry, warehouses, and retail wholesale.
-OF-5 (i2 of 5):
can only indicate the number 0 -9 variable length, continuous barcode, all bars and air indicate the code, the first number starts from the strip, the first number of numbers, the first number The two numbers consist of the blank area 10 times wider than the narrow bar. It is used in commodity wholesale, warehouses, airports, production/packaging recognition, and industry. The density in the one -dimensional barcode is the highest.
Reference materials: Baidu Encyclopedia-Barcode
Barcode recognition rate levels are divided into five levels of A, B, C, D, and F from high to low. The highest level A, the worst level D, F -class is unqualified. The higher the recognition rate, the easier it is to be recognized. Zhonglang barcode generation software uses the driving module optimization algorithm, which strengthens the output accuracy control of the barcode. The barcode recognition rate can reach A -level
Usually the US standard detection method divides the level of barcodes from high to low as A, B, C, D, F, the highest level, the worst level D, F -class is unqualified. Recognize. Barcode generating software uses the driving module optimization algorithm, which strengthens the output accuracy control of the barcode. The generated barcode recognition rate can reach A -level, as shown in the figure: