Symbol MK2000 MicroKiosk, Руководство по продукции

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Glossary-2
MK2000 MicroKiosk Product Reference Guide
Bar Width Thickness of a bar measured from the edge closest to the symbol start
character to the trailing edge of the same bar.
Baud Rate A measure of the data flow or number of signaling events occurring
per second. When one bit is the standard "event," this is a measure of
bits per second (bps). For example, a baud rate of 50 means
transmission of 50 bits of data per second.
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.
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.
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.
Character A pattern of bars and spaces which either directly represents data or
indicates a control function, such as a number, letter, punctuation
mark, or communications control contained in a message.
Character Set Those characters available for encoding in a particular bar code
symbology.