Wasp Bar Code WLS 8400 FZ 用户手册

GL-2

American Standard Code for Information 
Interchange. 
A 7-bit-plus-parity code representing 128 letters, 
numerals, punctuation marks, and control characters. 
It is a standard data transmission code in the U.S.

The ratio of symbol height to symbol length in a 2-
dimensional symbol.

The ability of an interface controller to determine the 
code type of a scanned bar code. After this 
determination is made, the information content is 
decoded.

The application of various technologies, such as bar 
code recognition, image recognition, voice 
recognition and RF/MW transponders, for the 
purpose of data entry into a data processing system 
and bypassing the key-entry component of traditional 
data entry.

The area surrounding a printed symbol including the 
spaces and quiet zones.

The dark element in a printed bar code symbol.

An array of parallel rectangular bars and spaces 
arranged according to the encodation rules of a 
particular symbol specification in order to represent 
data in machine-readable form (i.e., Code 39).

A single group of bars and spaces which represent an 
individual number, letter, punctuation mark or other 
symbol.

The number of characters represented per unit of 
measurement (e.g., characters per inch).

A device used to read or decode a bar code symbol.

The combination of symbol characters and features 
required by a particular symbology, including quiet 
zones, start and stop characters, data characters, 
check characters and other auxiliary patterns, that 
together form a complete scannable entity (see 

).

The dimension of a bar measured perpendicular to the 
bar width (see 

).