LED Display: it stands
for light emitting diodes it has a series of diodes are arranged to from a pixel
position to display. Electrical current excites diodes to glow in the format
text number and images. LCDs are super-thin displays that are used in laptop computer screens
and flat panel monitors. Smaller LCDs are used in handheld TVs, PDAs,
and portable video game devices. The image on an LCD screen is created
by sandwiching an electrically reactive substance between two
electrodes. This color of this substance can be changed by increasing
or reducing the electrical current. Since LCD screens are based on the
principle of blocking light (rather than emitting it), they use up much
less power than standard CRT (Cathode-Ray Tube) monitors.
APPLICATIONS:
a)
Remote control
b)
Key boards
c)
Optical mouse
d)
Type writers
e)
Electric devices
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