What does Alt+F4 do?

What does Alt+F4 do?


This is one of those jokes people play on each other -- it's in the same category with squirting flowers and exploding cigars. This joke works on machines running the Windows operating system because Windows happens to define certain keystrokes that work the same way in all applications. Just about everyone knows that Alt+Ctrl+Del interrupts the operating system, but most people don't know that Alt+F4 closes the current window. So if you had pressed Alt+F4 while playing a game, the game window would have closed.

It turns out there are several other handy keystrokes like that built into Windows. For example, Ctrl+Esc will pop up the Start menu, Alt+Esc will bring the next window to the foreground, and Alt+Tab or Alt+Shift+Tab will let you cycle through all available windows and jump to the one you select.

On keyboards that have the little "Windows" key (let's call it WK here) down near the space bar, you probably know that you can press that key to open the Start menu. You can also use that key with other keys like you use the shift key. For example:

WK+e - starts the Windows Explorer
WK+f - starts the Find in Files dialog
WK+Ctrl+f - starts the Find a Computer on the Network dialog
WK+M - minimizes all the windows to clear the desktop
WK+Shift+M - restores all the minimized windows
WK+r - starts the Run dialog
WK+F1 - starts Windows Help
WK+Pause - starts System Properties
The last keyboard trick that every Windows user should be aware of is MouseKeys. If you go to the Accessibility Options icon in the Control Panel, you can go to the Mouse section and turn on MouseKeys. This feature allows you to use the numeric keypad in addition to the mouse to move the cursor. It's handy if you are on a bumpy airplane ride or if your mouse is acting up. Another neat feature in Accessibility Options is the ability to turn on a beeper that beeps when you press the Caps Lock key -- great if you are the sort of person who hits it accidentally!
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how fake folder trick works

how to lock ur folders: ( THE TRICK USED IN FAKE FOLDER S/W )
Suppose you want to lock the folder movies in d: which has the path D:\movies.In the same drive create a text file and type
ren movies movies.{21EC2020-3AEA-1069-A2DD-08002B30309D}
Now save this text file as loc.bat
Create another text file and type in it
ren movies.{21EC2020-3AEA-1069-A2DD-08002B30309D} movies
Now save this text file as key.bat
Now you can see 2 batch files loc and key. Press loc and the folder games will change to control panel and you cannot view its contents. Press key and you will get back your original folder.
try it out!!!!!!!

AcRoBaT ReAdEr SpEeDeR TrIcK

AcRoBaT ReAdEr SpEeDeR TrIcK
Do u get irritated when acrobat reader takes 5/10 seconds to load when you want to open a pdf document. There is a way to speed up the loading.

1. Go to the installation folder of acrobat reader
(C:\program files\adobe\acrobat\reader\.. whatever)
2. Move all the files and folders from the "plugins" directory to the "Optional" directory. (I repeat.. cut and paste the files NOT copy & paste).
Also make sure that acrobat reader is not open else it will lock the files and not allow you to move the files).
Now your acrobat reader will load very fas
t and almost as good as notepad..

How BLU-RAY works

How BLU-RAY works

A Blu-ray drive looks and works in
traditionally the same way as any other
optical drive. The difference is that
Blu-ray drives use a violet-blue laser to
read data from an optical drive media
rather then the infrared light that is used
by CDs and red laser light used by DVD
writers. The violet-blue color falls into
the higher frequency segment in the
visible spectrum of light, thus resulting
in a lower wavelength (refer to box).
The wavelength of the laser used in
Blu-ray drives is 405 nm. To put it into
perspective, a CD drive uses an infrared
laser operating at a wavelength of
780 nm while a DVD drive uses a red laser
operating at a wavelength of 650 nm.
So, as we can see, using a light source
that has a lower wavelength causes a
smaller laser beam. This is advantageous
because it can focus better at a point on
the media surface from a ?xed distance
as the wave travels faster and hits the
surface before it disperses. Thus the
light ray used in a Blu-ray drive is more
accurate in pinpointing a particular
area on the media surface. As the
focusing capability gets ?ner, media
manufacturers can increase the track
pitch (refer to box) on the media thus
increasing the media’s storage capacity.
How much data can you fit on a Blu-ray disc?

A single-layer disc can hold 25GB.
A dual-layer disc can hold 50GB.

To ensure that the Blu-ray Disc format is easily extendable
(future-proof) it also includes support for multi-layer discs, which should allow
the storage capacity to be increased to 100GB-200GB (25GB per layer) in
the future simply by adding more layers to the discs.

How much video can you fit on a Blu-ray disc?

Over 9 hours of high-definition (HD) video on a 50GB disc.
About 23 hours of standard-definition (SD) video on a 50GB disc.
What video codecs will Blu-ray support?

[black]MPEG-2 - enhanced for HD, also used for playback of DVDs and HDTV
recordings.
MPEG-4 AVC - part of the MPEG-4 standard also known as H.264 (High
Profile and Main Profile).
SMPTE VC-1 - standard based on Microsoft's Windows Media Video (WMV)
technology.

Please note that this simply means that all Blu-ray players and
recorders will have to support playback of these video codecs, it will still
be up to the movie studios to decide which video codec(s) they use for
their releases.

What audio codecs will Blu-ray support?

[black]Linear PCM (LPCM) - offers up to 8 channels of uncompressed
audio.
Dolby Digital (DD) - format used for DVDs also known as AC3, offers
5.1-channel surround sound.
Dolby Digital Plus (DD+) - extension of DD, offers increased bitrates
and 7.1-channel surround sound.
Dolby TrueHD - extension of MLP Lossless, offers lossless encoding of
up to 8 channels of audio.
DTS Digital Surround - format used for DVDs, offers 5.1-channel
surround sound.
DTS-HD - extension of DTS, offers increased bitrates and up to 8
channels of audio.

Please note that this simply means that all Blu-ray players and
recorders will have to support playback of these audio codecs, it will still
be up to the movie studios to decide which audio codec(s) they use for
their releases.
Who developed Blu-ray?

The Blu-ray Disc format was developed by the Blu-ray Disc
Association (BDA), a group of leading consumer electronics, personal computer
and media manufacturers, with more than 170 member companies from all
over the world. The Board of Directors currently consists of:

Apple Computer, Inc.
Dell Inc.
Hewlett Packard Company
Hitachi, Ltd.
LG Electronics Inc.
Matsushita Electric Industrial Co., Ltd.
Mitsubishi Electric Corporation
Pioneer Corporation
Royal Philips Electronics
Samsung Electronics Co., Ltd.
Sharp Corporation
Sony Corporation
TDK Corporation
Thomson Multimedia
Twentieth Century Fox
Walt Disney Pictures
Warner Bros. Entertainment

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Hey people now u can listen to wats there in a pdf document instead of reading the whole document....
Try out the following key
combinations for Acrobat 6.0 & 7.0:
- ctrl+ shift + b ---> To hear the whole document
ctrl + shift + v ---> To hear only the page
ctrl + shift + c ---> To resume
ctrl + shift + e ---> To stop