These displays can be created in a number of ways; the following sections
examine each of these in more detail. To drive individual segments or parts of
a complete display, a technique called time division multiplexing is often used.
12.2.2 Light-emitting diode displays
If the PN junction of a diode is manufactured from gallium arsenide phosphide
(GaAsP), light will be emitted from the junction when a current is made to pass in
the forward-biased direction. This is a light-emitting diode (LED) and will produce
red, yellow or green light with slight changes ...
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