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EAN and JAN are abbreviations for European article numbering (EAN) and Japanese article numbering (JAN), respectively. EAN-13 is used worldwide for marking retail goods. It encodes 13 characters: the first two are a country code, followed by 10 data digits and a checksum. 2-digit and 5-digit supplemental bar codes may be added for a total of 14 or 17 data digits. EAN-8 is a shortened version of EAN-13. It includes a 2-digit country code, 5 data digits, and a checksum digit. 2-digit and 5-digit extension bar codes may be added. Products & Services
Fixed mount bar code scanners are designed to manually or mechanically read items passed by their scan windows. Unlike hand scanners, they are affixed to a single location.
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Hand held bar code scanners are used typically as inventory or point of sale (POS) devices. These scanners are passed over bar codes manually to read data. They often have a gun or wand design.
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Bar code printers are used to output bar code data in printed form.
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Bar code scanners are designed to read imprinted bar / matrix code symbologies. Bar code scanners can be slot card scanners, fixed mount scanners, or hand-held scanners.
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Laser printers use a laser beam to produce an image on a drum that is rolled through a reservoir of toner. The beam is picked up by the charged portions of the drum to fuse the image onto paper.
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Topics of Interest
In This Chapter
Introduction to Robotic Manipulators
Classifi cation of Sensors
Encoders and Dead Reckoning
Infrared Sensors
Ground-based RF Systems...
Besides the PN diodes that we studied in the last experiment there are many more types of diodes. Each one is used in applications that can take advantage of its behavior and...
A port contains a set of signal lines that the CPU uses to send or receive data with other components. Ports are usually used to communicate via modem, printer, keyboard, mouse, etc. In signaling,...
Autonomous robots often need a large number of sensors to span the space around them. A very common approach is the use of sonar sensors. However, complex algorithms are often required to handle sonar...
Introduction
This chapter discusses the principles of pressure measurement and the
pressure sensors commonly found in industrial control applications.
Many methods are used to measure pressure.
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