MC1000 User GuideGL-2
Bar The dark element in a printed bar code symbol.
Bar Code A pattern of variable-width bars and spaces which represents
numeric or alphanumeric data in machine-readable form. The
general format of a bar code symbol consists of a leading margin,
start character, data or message character, check character (if any),
stop character, and trailing margin. Within this framework, each
recognizable symbology uses its own unique format. See
Symbology.
Bar Code Density The number of characters represented per unit of measurement
(e.g., characters per inch).
Bar Height The dimension of a bar measured perpendicular to the bar width.
Bar Width Thickness of a bar measured from the edge closest to the symbol
start character to the trailing edge of the same bar.
BIOS Basic Input Output System. A collection of ROM-based code with a
standard API used to interface with standard PC hardware.
Bit Binary digit. One bit is the basic unit of binary information.
Generally, eight consecutive bits compose one byte of data. The
pattern of 0 and 1 values within the byte determines its meaning.
Bits per Second (bps) Bits transmitted or received.
Bit Binary digit. One bit is the basic unit of binary information.
Generally, eight consecutive bits compose one byte of data. The
pattern of 0 and 1 values within the byte determines its meaning.
bps See Bits Per Second.
Byte On an addressable boundary, eight adjacent binary digits (0 and 1)
combined in a pattern to represent a specific character or numeric
value. Bits are numbered from the right, 0 through 7, with bit 0 the
low-order bit. One byte in memory is used to store one ASCII
character.
BOOTP A protocol for remote booting of diskless devices. Assigns an IP
address to a machine and may specify a boot file. The client sends
a bootp request as a broadcast to the bootp server port (67) and the
bootp server responds using the bootp client port (68). The bootp
server must have a table of all devices, associated MAC addresses
and IP addresses.
boot or boot-up The process a computer goes through when it starts. During boot-
up, the computer can run self-diagnostic tests and configure
hardware and software.
CDRH Center for Devices and Radiological Health. A federal agency
responsible for regulating laser product safety. This agency
specifies various laser operation classes based on power output
during operation.
CDRH Class 1 This is the lowest power CDRH laser classification. This class is
considered intrinsically safe, even if all laser output were directed
into the eye's pupil. There are no special operating procedures for
this class.
CDRH Class 2 No additional software mechanisms are needed to conform to this
limit. Laser operation in this class poses no danger for unintentional
direct human exposure.
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