Datalogic DL-Axist, Руководство пользователя, Страница: 258 / 265

Glossary
250 DL-Axist™
Symbol
A scannable unit that encodes data within the conventions of a
certain symbology, usually including start/stop characters, quiet
zones, data characters and check characters.
Symbology
The structural rules and conventions for representing data within a
particular bar code type (e.g. UPC/EAN, Code 39, PDF417, etc.).
USB
Universal Serial Bus. Type of serial bus that allows peripheral devices
(disks, modems, printers, digitizers, data gloves, etc.) to be easily
connected to a computer. A “plug-and-play” interface, it allows a
device to be added without an adapter card and without rebooting
the computer (the latter is known as hot-plugging). The USB
standard, developed by several major computer and
telecommunications companies, supports data-transfer speeds up
to 12 megabits per second, multiple data streams, and up to 127
peripherals.
Visible Laser Diode (VLD)
A solid state device which produces visible laser light.
WLAN
A Wireless Local Area Network links devices via a wireless
distribution method (typically spread-spectrum or OFDM radio), and
usually provides a connection through an access point to the wider
internet. This gives users the mobility to move around within a local
coverage area and still be connected to the network.
WPAN
A Wireless Personal Area Network is a personal area network - a
network for interconnecting devices centered around an individual