Placing a seperate hibernate button on the shut down screen

Every time you need to hibernate your OS, you need to put one of your fingers to work in pressing the shift key. Thank god there is an alternative. We can place a hibernate button alongside the standby button by performing certain tweaks in the registry.
Open regedit ( click on start > run. Then type in regedit), create a key as shown below, "HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\System\Shutdown". Then under this key create a dword value "ShowHibernateButton" and set it's value to 1 as shown "ShowHibernateButton" = dword:00000001 .
Rejoice now you can just check out your work by jumping on to the shut down screen and notice the change.
Now you will see four buttons appearing on your shut down screen. Now you will not have to bother your finger ever time you put your PC on hibernation.

Working Of LED's

LED's or Light Emmitting diodes are semiconductor devices which emit light when electricity is passed through them. An LED consist of a p-n junction in which electricity is passed through it in forward biased mode as shown in the figure. Also a load resistance is applied to it so that the excess current does not harm the LED.
LED's are available in various colors to suit your need like red,blue,yellow,white etc. But the white and blue LED's are particularly costlier compared to the other colored LED's.
These LED's are tiny bulbs which can be used for various purposes like in calculators. Most significant use is the one in seven segment display, the one we see on our watches. These small bulbs are arranged in a particular pattern to create a beautiful display of a number.
There also exist the bi-colored and tri-colored LED's. So just check out the various available LED's and create something innovative out of it.

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• Baby's toy using LED
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Plasma Display

We all want to have a Flat screen, large size TV hanging in our living room. These flat screen televisions use either the LCD display or the Plasma display technology. I have already talked about the LCD display in my last post. Here I will stress on the Plasma display.
A plasma display consist of two glass panels holding an inert(that is, the gases do not react) mixture of noble gases(neon and xenon). These gases are exited by electricity converting them into plasma(ionized gas). This plasma then excites the phosphors to emit light which in turn lights up the pixels.
The pixel is a point which make up the entire screen. This pixel is in turn divided into a three subpixels. In a Plasma screen each subpixel can produce millions of colors. With the combination of all such pixels we get the so-called perfect picture quality.

Associated Links :

• USB Plasma Ball