Motorola Symbol LS2208 C

Boot or Boot-up. The process a computer goes through when it starts. During boot-up, the comp uter can run

self-diagnostic tests and configure hardware and sof tware.

bps. See Bits Per Second.

Byte. On an addressable boundary, eight adjacent binary digits ( 0 and 1) combined in a pattern to represent a specific

character or numeric value. Bits are numbered from the right, 0 through 7, with bit 0 the low-order bit. One byte in

memory is used to store one ASCII character.

CDRH. Center for Devices and Radiological Health. A federal age ncy responsible for regulating laser product safety. Thi s

agency specifies various laser operation classes ba sed on power output during operation.

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

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

CDRH Class 2. No additional software mechanisms are needed to con form 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 represe nts data or indicates a control function, such as a

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

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

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

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

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

decoded.

Codabar. A discrete self-checking code with a character set consisting of digits 0 to 9 and six additio nal characters: ( - $ : /

, +).

Code 128. A high density symbology which allows the con troller to encode all 128 ASCII characters without adding ext ra

symbol elements.

Code 3 of 9 (Code 39). A versatile and widely used alphanumeric bar code sy mbology with a set of 43 character types,

including all uppercase letters, numerals from 0 to 9 and 7 special ch aracters (- . / + % $ 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 a computer and closes all runnin g programs.

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