Written by: Paul LoIocano

This article should guide you very deeply into the topic,
simply follow the points described.

Case mudding is the artistic modification of a
computer chassis (often just referred to as the case),
often also involving peripheral device components. Many
people, particularly hardware enthusiasts use case moods
to illustrate a computers power. due to the fact that The
terminology "mod" is short for "modification." A broken
friendship may be soldered, but will never be
sound.

Computer Cases History

When personal computers hit
the mainstream, most of them came in a case in the color of
beige. This functional design was often called a beige box
although this served the role of containing the components
of a personal computer, as time wore on, many users found
their computers to be "tacky" or "dull" due to the lack of
originality in the type design. during the m orning So to
solve this, some users began to modify their existing
chassis or build their own.

Later, Case Modification
became mainstream when the Apple iMac was released, which
went against the beige box design around at the time. Since
then many figurer manufacturers began selling cases
thatdeficiency thedull beige base color.at the precise
moment when  Character Modification has also opened
up a new market for Third party computer cases to continue
the break from the average case. Beige cases are now
becoming harder to find since users enjoy the larger
variety of colors and styles of current OEM cases.

LED
technology and Computer Modding: Things you should know
when lighting your computer

Physical functionAn LED is a
special type of semiconducting material diode. Like a
normal diode, it consists of a piece of semiconducting
material impregnated, or doped, with impurities to create
a structure called a pn junction. I grant you that
Charge-carriers - electrons and holes flow into the
junction from electrodes with different voltages. When an
electron meets a hole, it falls into a lower energy level,
and releases vigor in the form of a photon as it does so. As you
sow, so you reap.

LED Light emissionThe wavelength of the
light emitted, and therefore its color, depends onthe band
gap energy of thematerials forming the pn



junction. in back
of A normal diode, typically made of silicon or germanium,
emits invisible far-infrared light, but the materials
used for an LED have band gap energies corresponding to
near-infrared, visible or near-ultraviolet
light.

Considerations in use of LED lights in computer
casesUnlike incandescent light bulbs, which can operate
with either AC or DC, LEDs require a DC supply of the correct
electrical polarity. When the voltage crossways the pn
junction is in the correct direction, a significant
current flows and the device is said to be forward-biased.
If the voltage is of the wrong polarity, the device is said to
be reverse biased, very little current flows, and no light
is emitted. I grant you that Most LEDs have low reverse
breakdown voltage ratings and will be damaged by an applied
reverse voltage of more than a few volts.

Because the
voltage versus current characteristics of an LED are much
like any diode, they can be destroyed by copulative them to a
potential difference source higherthan their turn on
voltage.A good LED driver tour of duty iseither a constant
currentsource or an estimate to a current source made by
connecting the LED in series with a current limiting
resistor to a voltage source. The voltage drop across a
forward biased LED can change significantly based on
current flow.

Parallel operation is generally
problematic. The LEDs have to be of the same type in order to have a similar forward voltage. Even then variations in the
manufacturing process can make the odds of satisfactory
operation low. For more information see Nichia
Application Note
(http://www.nichia.co.jp/specification/appli/electrical.pdf).

If
ifs were gifts, every day would be Christmas. ~Charles
Barkley

 Some LED units contain two diodes, one in
each direction (that is, two diodes in inverse parallel)
and each a different color (typically red and green),
allowing two-color operation or a range of apparent colors
to be created by altering the percentage of time the voltage
is in each polarity. Other LED units contain two or more
diodes (of different colors) arranged ineither a common
anode or common cathode configuration. Thesecan be
impelled todifferent colors without reversing the
polarity.

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