Datalogic Memor 11, Руководство пользователя

Страница: 110 / 112

CONTENTS
104
MEMOR™ 11
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, devel -
oped 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.
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 intercon -
necting devices centered around an individual person's workspace - in which the con -
nections are wireless. Typically, a wireless personal area network uses some technology
that permits communication within about 10 meters - in other words, a very short
range.
WWAN
Stands for "Wide Area Network." It is similar to a Local Area Network (LAN), but it is not
limited to a single location and it uses Mobile telecommunication cellular network tech -
nologies such as UMTS, GPRS, CDMA2000, GSM, CDPD, Mobitex, HSDPA or 3G to trans -
fer data. WWAN connectivity allows a user with a laptop and a WWAN card to surf the
web, check email, or connect to a Virtual Private Network (VPN) from anywhere within
the regional boundaries of cellular service.