EAN-130000000000871   EAN-13 barcode 0000000000871
UPC-A000000000871   UPC-A barcode 000000000871
UPC-E00008701   UPC-E barcode 00008701
Product NameUsb Magnetic Hub
LanguageEnglish
CategoryElectronics / Photography: Computer Hardware
Amazon.comA Buy on Amazon ~ B000AXDPV8
Long Description- USB 2.0- 4 ports hub- Built in magnet button for quick mount and easy movement- Data transfer rate: 480 Mbps- Plug and play- Blue LED indicator- Individual port over-current protection- Support Windows 98SE/2000/ME/XP and Mac OS 8.6/9/10
Created09-12-2012 2:03:30am
Modified08-19-2016 5:44:03pm
MD5fc8b5bce66aa412999fd16b7ee389f40
SHA25697f6d815092bb92b5820eb0df66cac9f84efdb8f505f46c570b96b85ae4dd525
Search Googleby EAN or by Title
Query Time0.0044661

Code 128 is a high-density 1D barcode symbology. This barcode set makes use of the entire 128 ASCII characters which include letter, number and symbols.

Code 128 Barcode

As with all barcodes, there are indicators to identify where the barcode starts and stops. These are marked in yellow below. Code 128 also has a check character which has been marked in green. The remainder of the barcode is the data being encoded. The text below the barcode is optional and is for human consumption in the event the barcode can't be scanned or if people also need to know what the code means.

Code 128 Barcode

Each character in the barcode symbol is composed of three bars and three spaces. Each bar or space must range from 1-4 units and the sum of all the width of all bars must work out to an even number. The stop marker is special because it adds an extra bar of 2 units at the very end (4 bars and 3 spaces). There are three different start markers to to identify which code set is being used. To represent all 128 characters, the code sets can be within a single barcode as needed by using control characters 98-101 (depending on the code set).

The check character is calculated by summing the value of each character and multiplying it by its position. The start character is also part of the sum but is added without weight (multiply by 1 just like the first encoded data character) then when you have the sum take the modulo 103 remainder. This gets a little more complex when mixing modes within a single barcode.

Close

Search

Close

Share

Close

Dialog