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Glossary of Terms
application A piece of software (a program) consisting of one or more
processes and supporting functions.
ASCII American Standard Code for Information Interchange. A seven-
bit code that standardizes a set of characters representing letters
and numbers for international use.
Baud rate A measurement of the speed of a communications line; the
number of times a line can change state in one second; the rate at
which a signal is modulated.
Binary A number system having only two symbols (1 and 0), and where
values are expressed in the base two number system.
Bit Abbreviation of binary digit. The smallest unit of information in a
binary system. Has a value of either one (1) or zero (0).
Bits per second The speed at which a channel transmits (in a serial transmission) a
single bit. A serial transmission sends one bit at a time.
Abbreviated as bps.
Byte A group of eight adjacent bits that function as a single unit.
Defined as an octet by the International Electrotechnical
Commission (IEC).
Change of state A significant change (as defined by a particular system) in the
condition of a point being monitored, for example, a change in
flow rate, temperature, voltage, etc. Usually associated with dual-
state status (that is, alarm/normal conditions). Abbreviated as
COS.
Char The name of a data-type in the C programming language. Stands
for character, or a group of eight bits that function as a single unit.
Configuration
information
The data or information that defines the operational limits and
characteristics of a particular device. Depending on the device,
this information is either manually downloaded into NVRAM or
EEPROM, or is pre-programmed into EPROM.
Configuration
system
See WESDAC Configuration System.