Matrix Orbital PK202-24-USB User Manual
Page 47
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.
PLED
Polymer Light Emitting Diode. Polymers are sub-
stances formed by a chemical reaction in which two
or more molecules combine to form larger molecules.
PLEDs are thin film displays that are created by sand-
wiching an undoped conjugated polymer between two
proper electrodes at a short distance. The polymer
emits light when exposed to electricity.
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.
Scroll
To view consecutive lines of data on the display screen.
The term scroll means that once the screen is full, each
new line appears at the bottom edge of the screen and
all other lines move up one position.
Serial Number
A number that is one of a series and is used for identi-
fication of the module.
Serial Port
A port, or interface, that can be used for serial commu-
nication, in which only 1 bit is transmitted at a time.
Version Number
This refers to the firmware revision number of the
module.
Matrix Orbital
PK202-24-USB
43