ean barcode scanner

Source: http://bbs.csdn.net/topics/220057226Create FUNCTION dbo. EAN_13 (@value varchar (13))Returns varchar (13)AsBegindeclare @s1 int, @s2 intDeclare @t table (ID int identity (), b bit)INSERT INTO @t (b)Select top 1 from syscolumnsSet @value = ' 0 ' +reverse (@value)Select @s1 =sum (CAST (substring (@value, id,1) as int)From @t Awhere Len (@value) >=id and id%2=0Set @[email protected]*3Select @s2 =sum (CAST (substring (@value, id,1) as int)From @t Awhere Len (@value) >=id and Id>=3 and Id%2=1

Android barcode scanner and android barcode scanner Source code: Address 1: https://github.com/alivebao/BarCodeReader Address 2: http://download.csdn.net/detail/miaoyunzexiaobao/8297201 Reference link: Zxing Getting Started: http://www.cnblogs.com/liuan/archive/2012/01/05/2312714.html BitmapLuminanceSource class: http:

I. CCD scanners use the principle of photoelectrical coupling (CCD) to imaging bar code printed patterns and then decode them. Its advantages are: No rotating shaft, motor, long service life; low price. When selecting a CCD scanner, two parameters are most important: 1. scene Depth: Because CCD imaging is similar to a camera, if you want to increase the depth of field, you need to increase the lens accordingly, so that the size of CCD is too large and

DeactivatingBarcode ScannerItselfHardware faultsIn addition to the unrecognized bar code, the following situations may also cause the bar code scanner to be unable to recognize the bar code. ( 1 ) The recognized barcode is not opened.For some special bar codes, the factory settings of the barcode scanner are di

Through the analysis of the "fix barcode" zxing Project source code interpretation (2.3.0 version, Android section), it is now possible to achieve the ultimate goal: streamlining barcode scanner and separating the encoding and decoding into two separate sections for quick integration into your project in the future.CodingIn the previous analysis, the coding secti