Appendix G Glossary of Terms
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Appendix G
Glossary of Terms
ADO ADO stands for Active Data Objects and is data access
technology which uses OLE-DB to access data sources
in a uniform way e.g. MS-Access databases, MS-Excel
spreadsheets and Comma Separated Variable files.
AND A logic operator used to interrogate Boolean type points.
AND returns 'TRUE' if all arguments are 'TRUE'. An
example of AND is that if a is a statement and b is a
statement, AND returns 'TRUE' if both a and b are
'TRUE'. If one or both statements return 'FALSE' then
AND returns 'FALSE'.
Application A software program that accomplishes a specific task.
Examples of applications are CX-Supervisor, CX-Server
and Microsoft Excel. CX-Supervisor and its development
environment allows the creation and testing of new
applications through a Graphical User Interface (GUI).
Arguments Words, phrases, or numbers that can be entered on the
same line as a command or statement to expand or
modify the command or statement within the CX-
Supervisor script language. The command acts on the
argument. In essence the command is a verb, and the
argument is the object of the verb. An example of an
argument in CX-Supervisor is
"DDETerminate(channel)" where DDETerminate is
a command within the script language, and channel is
the argument upon which the command will act.
ASCII An old standard, defining a set of characters. Officially
using only 7 bits allows definitions for only 127
characters, and does not include any accented
characters.
Bitmap The representation of an image stored in a computer's
memory. Each picture element (pixel) is represented by
bits stored in the memory. In CX-Supervisor a bitmap
image can be installed as a single object.
Boolean type A type of point where the value of the point can be one of
two states. Essentially the two states are '0' and '1', but
these states can be assigned a meaningful designation.
Examples are:
COM COM is a Microsoft technology that allows components
used to interact.
State Example Example Example Example
0 OFF FALSE OUT CLOSED
1 ON TRUE IN OPEN
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