Glossary - 3
Codabar.
A discrete self-checking code with a character set consisting of digits 0 to 9 and six additional characters: (“-”, “$”,
“:”, “/”, “,” and “+”).
Code 128.
A high density symbology which allows the controller to encode all 128 ASCII characters without adding extra
symbol elements.
Code 3 of 9 (Code 39).
A versatile and widely used alphanumeric bar code symbology with a set of 43 character types,
including all uppercase letters, numerals from 0 to 9 and 7 special characters (“-”, “.”, “/”, “+”, “%”, “$” and space). The
code name is derived from the fact that 3 of 9 elements representing a character are wide, while the remaining 6 are
narrow.
Code 93.
An industrial symbology compatible with Code 39 but offering a full character ASCII set and a higher coding
density than Code 39.
Code Length.
Number of data characters in a bar code between the start and stop characters, not including those
characters.
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.
Continuous Code.
A bar code or symbol in which all spaces within the symbol are parts of characters. There are no
intercharacter gaps in a continuous code. The absence of gaps allows for greater information density.
Cradle.
A cradle is used for charging the terminal battery and for communicating with a host computer, and provides a
storage place for the terminal when not in use.
D
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
.
Dead Zone.
An area within a scanner's field of view, in which specular reflection may prevent a successful decode.
Decode.
To recognize a bar code symbology (e.g., UPC/EAN) and then analyze the content of the specific bar code
scanned.
Decode Algorithm.
A decoding scheme that converts pulse widths into data representation of the letters or numbers
encoded within a bar code symbol.
Decryption.
Decryption is the decoding and unscrambling of received encrypted data. Also see,
Encryption
and
Key
.
Depth of Field.
The range between minimum and maximum distances at which a scanner can read a symbol with a certain
minimum element width.
Summary of Contents for MC75 - Worldwide Enterprise Digital Assistant
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