Datalogic Lynx User Manual page 159

RAM
Random Access memory. Data in RAM can be accessed in random order, and
quickly written and read.
RF
Radio Frequency.
RTC
Real Time Clock.
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.
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.
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
technologies such as GPRS, CDMA2000, GSM, CDPD, Mobitex, HSDPA or 3G to
transfer 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.
WPAN
A Wireless Personal Area Network is a personal area network - a network for
interconnecting devices centered around an individual person's workspace - in which
the connections 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.
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