Motorola MC7090CN User Manual page 113

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.
Device Configuration Package. The 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.
Glossary - 3