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Glossary - 2 VC6000 Series Product Reference Guide

boot or boot-up. The process a computer goes through when it starts. During boot-up, the computer can run self-diagnostic

tests and configure hardware and software.

CDRH. Center for Devices and Radiological Health. A federal agency responsible for regulating laser product safety. This

agency specifies various laser operation classes based on power output during operation.

CDRH Class 1. This is the lowest power CDRH laser classification. This class is considered intrinsically safe, even if all laser

output were directed into the eye's pupil. There are no special operating procedures for this class.

CDRH Class 2. No additional software mechanisms are needed to conform to this limit. Laser operation in this class poses

no danger for unintentional direct human exposure.

Character. A pattern of bars and spaces which either directly represents data or indicates a control function, such as a

number, letter, punctuation mark, or communications control contained in a message.

Character Set. Those characters available for encoding in a particular bar code symbology.

Check Digit. A digit used to verify a correct symbol decode. The scanner inserts the decoded data into an arithmetic formula

and checks that the resulting number matches the encoded check digit. Check digits are required for UPC but are

optional for other symbologies. Using check digits decreases the chance of substitution errors when a symbol is

decoded.

Cold Boot. A cold boot restarts the mobile computer and erases all user stored records and entries.

COM port. Communication port; ports are identified by number, e.g., COM1, COM2.

Data Communications Equipment (DCE). A device (such as a modem) which is designed to attach directly to a DTE (Data

Terminal Equipment) device.

DCE. See Data Communications Equipment.

DCP. See Device Configuration Package.

Decryption. Decryption is the decoding and unscrambling of received encrypted data. Also see, Encryption and Key.

Device Configuration Package. The Symbol Device Configuration Package provides the Product Reference Guide (PRG),

flash partitions, Terminal Configuration Manager (TCM) and the associated TCM scripts. With this package hex images

that represent flash partitions can be created and downloaded to the mobile computer.

DRAM. Dynamic random access memory.

DTE. See Data Terminal Equipment.

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