Symbol MC50 User Manual page 96

GL-10 MC50 User Guide
PC Card
PCMCIA
Percent Decode
PING
Print Contrast Signal (PCS)
Programming Mode
Quiet Zone
QWERTY
RAM
Reflectance
Resolution
RF
ROM
ROM-DOS
Router
RS-232
Scan Area
A plug-in expansion card for laptop computers and other devices,
also called a PCMCIA card. PC Cards are 85.6mm long x 54 mm
wide, and have a 68 pin connector. There are several different
kinds:
Type I; 3.3 mm high; use - RAM or Flash RAM
Type II; 5 mm high; use - modems, LAN adaptors
Type III; 10.5 high; use - Hard Disks
Personal Computer Memory Card Interface Association. See PC
Card.
The average probability that a single scan of a bar code would
result in a successful decode. In a well-designed bar code scanning
system, that probability should approach near 100%.
(Packet Internet Groper) An Internet utility used to determine
whether a particular IP address is online. It is used to test and
debug a network by sending out a packet and waiting for a
response.
Measurement of the contrast (brightness difference) between the
bars and spaces of a symbol. A minimum PCS value is needed for a
bar code symbol to be scannable. PCS = (RL - RD) / RL, where RL is
the reflectance factor of the background and RD the reflectance
factor of the dark bars.
The state in which a scanner is configured for parameter values.
See Scanning Mode.
A clear space, containing no dark marks, which precedes the start
character of a bar code symbol and follows the stop character.
A standard keyboard commonly used on North American and some
European PC keyboards. "QWERTY" refers to the arrangement of
keys on the left side of the third row of keys.
Random Access Memory. Data in RAM can be accessed in random
order, and quickly written and read.
Amount of light returned from an illuminated surface.
The narrowest element dimension which is distinguished by a
particular reading device or printed with a particular device or
method.
Radio Frequency.
Read-Only Memory. Data stored in ROM cannot be changed or
removed.
The name of the licensed Disk Operating System loaded into the
mobile computer's flash file system.
A device that connects networks and supports the required
protocols for packet filtering. Routers are typically used to extend
the range of cabling and to organize the topology of a network into
subnets. See Subnet.
An Electronic Industries Association (EIA) standard that defines the
connector, connector pins, and signals used to transfer data serially
from one device to another.
Area intended to contain a symbol.