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  1. #1
    Member vagpap's Avatar
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    Question What does the "Scroll Lock" button do?

    I know that did something back in DOS days (not exactly what).

    Any suggestions?

  2. #2
    Member Spartan's Avatar
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    I copied this from another website:

    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.
    Also, be sure to check THIS out. It's by far the best adaptation of a keyboard key I have ever seen.
    Last edited by Spartan; November 29th, 2001 at 04:36 PM.

  3. #3
    Misanthropic
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    http://www.wikipedia.com/wiki/Scroll_lock

    That is the site where I got a definition exactly like Spartans from.

    Wikipedia
    Kind of neat site.

  4. #4
    Ultimate Member DutchMaster's Avatar
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    Talking

    ROFL!!!


    All I did know the scroll lock does nothing then turning the LED on and off. Perhapse I am not old enough that is was used with some programs back in the days.

  5. #5
    Misanthropic
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    That was kind of what I was thinking DM...

  6. #6
    Not Really a Member
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    Learn something new everyday
    I'm with you two, dont remember ever using it for anything more than entertainment during periods of horrificly extreme boredom


    <hit scroll lock --> light comes on>
    <hit scroll lock --> light goes off> cool
    <hit scroll lock --> light comes on>
    <hit scroll lock --> light goes off> heh, it did it again
    <hit scroll lock --> light comes on>
    <hit scroll lock --> light goes off> hey it just keeps on going
    <hit scroll lock --> light comes on>
    <hit scroll lock --> light goes off> energizer key?
    <hit scroll lock --> light comes on>
    <hit scroll lock --> light goes off> .. hearing a funny drumming sound...
    <hit scroll lock --> light comes on>
    <hit scroll lock --> light goes off> WHERE'D that rabbit come from!
    <hit scroll lock --> light comes on>
    <hit scroll lock --> light goes off> strange shade of green..
    <hit scroll lock --> light comes on>
    <hit scroll lock --> light goes off> almost as green as that thing moving on the plate over thats been there for several months....

  7. #7
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    Question

    it would pause text scrolling down the screen until it is turned off again
    Sorry, I don't get this, what does it mean ?

    yup, its 1pm here and i still havent woken up

  8. #8
    Misanthropic
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    Vass,
    I don't think I've ever been that bored in my entire life!

  9. #9
    Ultimate Member DutchMaster's Avatar
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    Than we have "Sys Rq" (ctrl-printscreen). This button does nothing or is there are secret thing turned on?
    Another keyboard mystery.

    Hey the "power" button works on my keyboard in XP. It shuts down windows and then the computer. Have to be carefull where my fingers go, there is no warning before shutting down!!!

  10. #10
    Ultimate Member osprey4's Avatar
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    In the old DOS days, when you would show long directory file list or print-to-screen a long text file, the text would fly by too fast to be able to see everything, so you could hit the scroll lock to stop it.

    Hey, even computers have a vestigial organ!

    Jn

  11. #11
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    SysReq Print Scrn

    key is quite handy. It will take a screenshot and put it on the clipboard. Then you can paste it into a document, e-mail message, etc.
    very handy little booger.

  12. #12
    Ultimate Member DutchMaster's Avatar
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    Yeah that's printscreen, but what about sys rq(=ctrl+"printscreen")?
    Its the same like pause and break button. One button two functions, button=pause, ctrl+button=break.

    What the hack is syst rq. System request? Why and with what is it used. Hmm lets see if www.whatis.com has the answer.

    Edit:
    Noop
    Last edited by DutchMaster; November 30th, 2001 at 03:09 PM.

  13. #13
    Ultimate Member edwelly's Avatar
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    I thought it was Alt+PrintScrn that took a screen shot to be pasted...
    --edwelly
    If you never try anything new,
    you will miss out of some of life's many disappointments...

  14. #14
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    I've heard of print screen for the whole screen and alt-print screen for screen shot of the active window...


    ctrl print screen?

  15. #15
    Ordained Mommy NeoStarO1's Avatar
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    Originally posted by edwelly
    I thought it was Alt+PrintScrn that took a screen shot to be pasted...
    --edwelly
    Alt + PrintScrn makes a screen shot of the active window.

    PrintScrn (used alone) takes a screen shot of the entire screen.

    NeoStar

  16. #16
    Ultimate Member DutchMaster's Avatar
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    That's correct. But what about ctr+printscreen=sys req? That's even a bigger mystery then the scroll lock.

    System Request key

    Edit:
    Found something, it has to to with terminals:
    "SYS REQ: Allows user to switch between SSCP-LU
    and LU-LU sessions" (Don't know what SSCP-LU or LuLu is)
    And this:
    "The SYS REQ key on a 3270 terminal invokes the trusted path and re- connects the terminal to the receptionist, which then informs user authentication and connects the user to the appropriately labeled compartment for the designated sensitivity level."
    Last edited by DutchMaster; December 1st, 2001 at 07:51 AM.

  17. #17
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    SysRq
    There is a key labeled SysRq on keyboards for PCs that no longer has a standard use. The BIOS keyboard routines simply ignore it; therefore so do the DOS input routines as well as the keyboard routines in libraries supplied with high-level languages.

    The key is not totally inactive, however. When it is pressed, nothing is stored in the keyboard buffer, but a BIOS function is called. The default handler of that function does nothing and simply returns. Programs can use SysRq simply by creating an interrupt handler to replace the default stub, but most programs have no need for that functionality. Software that has the potential to completely lock up the system, so that a BIOS interrupt is the only input that could be generated, use SysRq as a form of "panic button."

    In Linux systems, provided the kernel has been compiled with the correct option, the key can be used to perform a variety of functions in an emergency, such as syncing disks, killing processes and powering off the computer.

    Break key
    The break key is a special key on computer keyboards that no longer has a well-defined purpose. Its origins go back to telegraph practices.

    A standard telegraph key has a built-in knife switch that can be used to short the keys contacts. When the key was not in use, that switch was kept closed, so that a signal was continually sent. If that steady-state signal was interrupted, it indicated one of two things: either the operator was about to start transmitting, or something else had happened to break the connection -- such as hostiles cutting the telegraph line.

    As the teletype came into use, a key was created that would temporarily interrupt the communications line, allowing this practice to continue.

    On personal computers, the break key is used in different ways by different programs, but usually involves some sense of changing the interaction the computer, such as switching between multiple login sessions or interrupting a modem connection.

  18. #18
    Ultimate Member sKiT's Avatar
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    wow.....welcome to TIMO Mr. Ratt!

  19. #19
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    fankyou m8

  20. #20
    Ultimate Member tobu's Avatar
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    Welcome to TechIMO dude, this thread is how i found TechIMO.

    I was sitting round pondering life and this question came up!
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