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A barcode reader or barcode scanner is an optical scanner that can read printed barcodes and send the data they contain to computer. [1] Like a flatbed scanner , it consists of a light source, a lens, and a light sensor for translating optical impulses into electrical signals.
Labels were required to be unobstructed, and couldn't have anything such as ladders, railings, grab iron between them and the scanner. When placed on rail cars with external [16] For curved surfaces of tank cars, an oversized ACI label was available, known as a 'extended-range panel' The retroreflective stripes on these panels were 3.5 inches ...
The earliest, and still [when?] the cheapest, barcode scanners are built from a fixed light and a single photosensor that is manually moved across the barcode. Barcode scanners can be classified into three categories based on their connection to the computer. The older type is the RS-232 barcode scanner. This type requires special programming ...
CueCat barcode scanner and interposer cables with male and female PS/2 connectors. The CueCat, styled :CueCat with a leading colon, is a cat-shaped handheld barcode reader designed to allow a user to open a link to an Internet URL by scanning a barcode. The devices were given away free to Internet users starting in 2000 by the now-defunct ...
However, if you need to do more scanning, more often, a sheet-feed scanner will be better, as this type lets you scan several pages at once via an automatic document feeder (ADF).
It is the easiest type for data capture because every data field is located at the same place for all documents. [citation needed] Semi-structured documents (invoices, purchase orders, waybills, etc.) have the same structure, but their appearance depends on several items and other parameters. Capturing data from these documents is a complex ...
A portable data terminal (PDT) is an electronic device that is used to enter or retrieve data via wireless transmission (WLAN or WWAN). They have also been called enterprise digital assistants ( EDA ), data capture mobile devices , batch terminals or just portables .
The AAR selected four systems for extensive field tests. General Electric developed an RFID system, ABEX a microwave system, Wabco a black and white barcode system, and General Telephone and Electronics (GTE) a color barcode system called KarTrak. The RFID system used a tag mounted under the rail car and an interrogator installed between the rails.
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