Matrix Orbital LK204-24-USB - Manual (Page 48)

Configuration The way a system is set up, or the assortment of com-
ponents that make up the system. Configuration can
refer to either hardware or software, or the combina-
tion of both.
Contrast The ratio of luminance between the light state of the
display to the dark state of the display.
Controller The micro-controller or PC used to control the Matrix
Orbital display unit.
DB-9 The designation of a connector used in the RS232 in-
terface: 9 pin connector
Firmware Software (programs or data) that has been written onto
read-only memory (ROM). Firmware is a combina-
tion of software and hardware. ROMs, PROMs and
EPROMs and flash EEPROMs that have data or pro-
grams recorded on them are firmware.
Font A design for a set of characters. A font is the combina-
tion of typeface and other qualities, such as size, pitch,
and spacing.
Font Metric A definition of where font is to be placed, such as mar-
gins and spacing between characters and lines.
Hexadecimal Refers to the base-16 number system, which consists
of 16 unique symbols: the numbers 0 to 9 and the let-
ters A to F. For example, the decimal number 15 is
represented as F in the hexadecimal numbering sys-
tem. The hexadecimal system is useful because it can
represent every byte (8 bits) as two consecutive hex-
adecimal digits. It is easier for humans to read hex-
adecimal numbers than binary numbers.
Interface A means by which two systems interact.
LCD Liquid Crystal Display
Module Type Value This refers to the model number of the module.
Pixel The smallest individually controllable element of a
display.
Pre-Generated Fonts Pre-determined fonts which can be downloaded into
graphic liquid crystal displays.
Primitive A low-level object or operation from which higher-
level, more complex objects and operations can be
constructed. In graphics, primitives are basic elements,
such as lines, curves, and polygons, which you can
combine to create more complex graphical images.
RS-232 Short for recommended standard-232C, a standard in-
terface approved by the Electronic Industries Associa-
tion (EIA) for connecting serial devices.
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