Glossary
User’s Manual 203
Laser Diode
A gallium-arsenide semiconductor type of laser connected to a
power source to generate a laser beam. This laser type is a compact
source of coherent light.
Light Emitting Diode (LED)
A low power electronic light source commonly used as an indicator
light. It uses less power than an incandescent light bulb but more
than a Liquid Crystal Display (LCD).
Liquid Crystal Display (LCD)
A display that uses liquid crystal sealed between two glass plates.
The crystals are excited by precise electrical charges, causing them
to reflect light outside according to their bias. They use little
electricity and react relatively quickly. They require external light to
reflect their information to the user.
MIL
1 mil = 1 thousandth of an inch.
Parameter
A variable that can have different values assigned to it.
RAM
Random Access memory. Data in RAM can be accessed in random
order, and quickly written and read.
Resolution
The narrowest element dimension which is distinguished by a
particular reading device or printed with a particular device or
method.
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