what is use of Scroll Lock & Print Screen?  

The scroll lock is a key (with an associated status light) on a computer keyboard. The original purpose of the scroll lock was that when it is turned on, it would pause text scrolling down the screen until it is turned off again.
Pressing the Print Screen key causes the computer to send whatever images and text are currently on the display screen to the printer. Some graphics programs and Windows, use the Print Screen key to obtain Screen Captures.

Answered by Ashish , an ibibo Wizard, at 7:28 PM on March 17, 2008

Scroll lock-Scroll lock is a key (with an associated status light) on most modern computer keyboards. The behavior of the key depends on the particular software in use.The scroll lock key is a remnant from the original IBM PC keyboard. In the original design, scroll lock was intended to modify the behavior of the arrow keys. When the scroll lock mode was on, the arrow keys would scroll the contents of a text window instead of moving the cursor. In this usage, scroll lock is a modifier key like Alt and Shift (which modify the function of other keys) and, more specifically, a toggling lock key like Num Lock or Caps Lock, which have a state that persists after the key is released. Today, this particular use of scroll lock is rare. Only a few modern programs still honor this behavior, such as Microsoft Excel (in the behavior of arrows — when scroll lock is on, the selection does not move), Lotus Notes and Forté Agent. In modern GUI environments, scrolling is usually accomplished using means such as scrollbars or scroll wheels. Therefore scroll lock can be regarded as a defunct feature in almost all modern programs and operating systems; some keyboards lack scroll lock altogether.Scroll lock has fallen into such extremely infrequent use that some of the lighter-weight Linux desktop environments don't even support it at all, such as Xfce.

USES

* In Linux virtual consoles, the scroll lock key is used to pause screen output. This behaviour emulates the Hold Screen key or similar flow control mechanisms on computer terminals. Because of this emulation, the term scroll lock is sometimes used to generically refer to a screen pausing behaviour. This usage could potentially cause confusion since screen pausing behaviour is not intrinsically a part of the scroll lock key. In DOS, the Pause key pauses the screen output.

* In the Opera web browser the scroll lock key plays an important role in voice recognition.

* KVM switches often use the scroll lock key with a number as a hot key to activate a softswitch for changing between channels. Similarly, the KVM-like software solution Synergy uses scroll lock to keep the keyboard and mouse control within the current screen. Certain 2-computer KVM switches provide that a "double click" of the scroll lock key (striking the key twice quickly) is used to switch between computers.

* In the multilingual text editor iLeap, scroll lock key is used as a toggle switch to change between two languages.

* In Windows NT-based operating systems with a certain registry setting called "CrashOnCtrlScroll" is enabled, double tapping scroll lock while holding Ctrl key initiates a system crash to allow debugging the current state of the operating system.

* In FreeBSD, and other BSD descendants, Scroll Lock still functions similarly to IBM's original design.

* Apple Keyboards do not have a scroll lock key, except for some ADB keyboards.

* On Dell laptops the scroll lock key becomes the Fn key when an external keyboard is used. The original behavior can be enabled in the BIOS.

* Individual applications may assign any function to this key as an added convenience hotkey.

* Xfire, a chat application for use while playing a video game, is activated by using the default key combination of "scroll lock" + "X". Xfire also uses Scroll lock for other in-game purposes, such as taking screenshots. Sometimes its LED is used to notify users that an event occurred.

* In the games MapleStory and Final Fantasy XI, the scroll lock key is used to take screenshots.

* In the game Flyff, the scroll lock key allows to zoom the current frontal view of the character.

* In the game StepMania, the scroll lock key provides access to the options menu.

* In the media system My Media System, navigation is done in a fashion very similar to the original idea of t

Answered by Kaushal , an ibibo Advisor, at 6:20 PM on March 17, 2008

Print Screen is really useful, that's how you take a "screenshot" of whatever you're looking at. Press it once, then go into mspaint (start-> run -> type "mspaint") then select edit -> paste and then save it as a bmp, jpg, or a pgn image file.
Scroll lock is a key (with an associated status light) on most modern computer keyboards. The behavior of the key depends on the particular software in use. The Scroll Lock key is a remnant from the original IBM PC keyboard. In the original design, Scroll Lock was intended to modify the behavior of the arrow keys. When the scroll lock mode was on, the arrow keys would scroll the contents of a text window instead of moving the cursor. In this usage, Scroll Lock is a modifier key like Alt and Shift (which modify the function of other keys) and, more specifically, a toggling lock key like Num Lock or Caps Lock, which have a state that persists after the key is released.

Answered by SARLA , an ibibo Advisor, at 4:12 PM on March 17, 2008

Scroll lock means the scroll keys i.e. the sirection keys that we use to move up and down, left and right are locked. Print screen means the acreen that you are using can be copied for printing.

Answered by kamlesh , an ibibo Specialist, at 4:12 PM on March 17, 2008

In Linux virtual consoles, the scroll lock key is used to pause screen output. This behaviour emulates the Hold Screen key or similar flow control mechanisms on computer terminals. Because of this emulation, the term scroll lock is sometimes used to generically refer to a screen pausing behaviour. This usage could potentially cause confusion since screen pausing behaviour is not intrinsically a part of the scroll lock key. In DOS, the Pause key pauses the screen output.
In the Opera web browser the scroll lock key plays an important role in voice recognition.
KVM switches often use the scroll lock key with a number as a hot key to activate a softswitch for changing between channels. Similarly, the KVM-like software solution Synergy uses scroll lock to keep the keyboard and mouse control within the current screen. Certain 2-computer KVM switches provide that a "double click" of the scroll lock key (striking the key twice quickly) is used to switch between computers.
In the multilingual text editor iLeap, scroll lock key is used as a toggle switch to change between two languages.
In Windows NT-based operating systems with a certain registry setting called "CrashOnCtrlScroll" is enabled, double tapping scroll lock while holding Ctrl key initiates a system crash to allow debugging the current state of the operating system. [1][2]
In FreeBSD, and other BSD descendants, Scroll Lock still functions similarly to IBM's original design.
Apple Keyboards do not have a scroll lock key, except for some ADB keyboards.
On Dell laptops the scroll lock key becomes the Fn key when an external keyboard is used. The original behavior can be enabled in the BIOS.
Individual applications may assign any function to this key as an added convenience hotkey.
Xfire, a chat application for use while playing a video game, is activated by using the default key combination of "scroll lock" + "X". Xfire also uses Scroll lock for other in-game purposes, such as taking screenshots. Sometimes its LED is used to notify users that an event occurred.
In the games MapleStory and Final Fantasy XI, the scroll lock key is used to take screenshots.
In the game Flyff, the scroll lock key allows to zoom the current frontal view of the character.
In the game StepMania, the scroll lock key provides access to the options menu.
In the media system My Media System, navigation is done in a fashion very similar to the original idea of the scroll lock key. At the beginning and end of a list, navigating will move the cursor but the view. At the middle of the list, the cursor will be locked at the middle of the screen while the view moves.

Answered by varadaraju , an ibibo Master, at 2:59 PM on March 17, 2008

Scroll Lock:
Scroll lock is a key (with an associated status light) on most modern computer keyboards. The behavior of the key depends on the particular software in use.

The scroll lock key is a remnant from the original IBM PC keyboard. In the original design, scroll lock was intended to modify the behavior of the arrow keys. When the scroll lock mode was on, the arrow keys would scroll the contents of a text window instead of moving the cursor. In this usage, scroll lock is a modifier key like Alt and Shift (which modify the function of other keys) and, more specifically, a toggling lock key like Num Lock or Caps Lock, which have a state that persists after the key is released. Today, this particular use of scroll lock is rare. Only a few modern programs still honor this behavior, such as Microsoft Excel (in the behavior of arrows — when scroll lock is on, the selection does not move), Lotus Notes and Forté Agent. In modern GUI environments, scrolling is usually accomplished using means such as scrollbars or scroll wheels. Therefore scroll lock can be regarded as a defunct feature in almost all modern programs and operating systems; some keyboards lack scroll lock altogether.

Scroll lock has fallen into such extremely infrequent use that some of the lighter-weight Linux desktop environments don't even support it at all, such as Xfce.
Print Screen:
A picture tells a thousand words they say, and sending or printing a screenshot of an application in action can often be of great assistance if you are seeking technical help, teaching someone how to perform a particular task or simply recommending the program to a friend.

Windows has a built-in function that allows you to easily create screenshots of any open Window, including the desktop. This function is accessed by pressing the "Print Screen" key on your computer keyboard. On most keyboards, the Print Screen key is located on the upper right above the "Insert" key. On some keyboards, it may be labelled "prt scr" rather than "Print Screen".



To create a screenshot:


With the desired application open, hit the Print Screen key. Pressing the Print Screen key should store a copy of the current computer screen on the Windows Clipboard.


You can then paste the image into an image program such as MS Paint, manipulate it as desired, and save it to your hard drive for future reference. You can also paste it to other compatible programs such as MS Word, Power Point and others.


Now you will be able to view this frozen moment in your computer's history any time you like as well as print it, upload it to a web page or email it as required. (You may need to reduce the image file size before uploading it to a website or emailing it.)



To create a screenshot of just the active Window rather than the entire computer screen, press "Alt + Print Screen" rather than just "Print Screen".

By the way, the label "Print Screen" is a carry over from earlier days of computing. In the DOS operating system, hitting the Print Screen button simply printed an image of the screen displayed at the time, hence the name.

Answered by Sudipta Deb , an ibibo Specialist, at 2:16 PM on March 17, 2008

Hi ashish, The scroll lock is a key (with an associated status light) on a computer keyboard. The original purpose of the scroll lock was that when it is turned on, it would pause text scrolling down the screen until it is turned off again. However, it only works on software that supports it, which most software today does not. While it was useful in the days of character interfaces, in a GUI environment (where such things as scrollbar?s are provided) it is much less useful. Programmers can however make their software respond to the key in whatever way they like, hence it need not be restricted to its original function.

"Print screen key: Often abbreviated Prt Scr, the Print Screen key is a useful key supported on most PCs. In DOS, pressing the Print Screen
key causes the computer to send whatever images and text are currently on the display screen to the printer. Some graphics programs,including Windows, use the Print Screen key to obtain screen captures."
Hope you got the picture ashish. ThankQ.

Answered by Khursheed , an ibibo Master, at 12:58 PM on March 17, 2008

Well Ashaish , The Windows Print Screen Key can be a powerful tool if you know how to use it to its full potential.

The sole function of this key is to take a snapshot or picture of your computer screen and copy it to the clipboard (the clipboard is an invisible holding area for content that is copied).

Its the same thing as if you copied something from a document and it is now on your clipboard waiting to be pasted in its final destination. Its that simple.

Often abbreviated Prt Scr, the Print Screen key is a useful key supported on most PCs.

In DOS, pressing the Print Screen key causes the computer to send whatever images and text are currently on the display screen to the printer. Some graphics programs and Windows, use the Print Screen key to obtain Screen Captures.

For more information , visit the source site :

http://www.seoconsultants.com/ windows/print-screen/


coming to Scroll lock button , Scroll lock is a key (with an associated status light) on most modern computer keyboards.

The behavior of the key depends on the particular software in use.

The scroll lock key is a remnant from the original IBM PC keyboard. In the original design, scroll lock was intended to modify the behavior of the arrow keys. When the scroll lock mode was on, the arrow keys would scroll the contents of a text window instead of moving the cursor. In this usage, scroll lock is a modifier key like Alt and Shift (which modify the function of other keys) and, more specifically, a toggling lock key like Num Lock or Caps Lock, which have a state that persists after the key is released.

For more information about Scroll Lock key , Please visit the source site :

http://en.wikipedia.org/wiki/S croll_lock

Answered by alokgupta14 , an ibibo Guru, at 12:54 PM on March 17, 2008