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• #21624 N0zer0 senior tag

  Új Válasz 2014-12-20 14:52:39 #21624

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  Összes hozzászólása itt Válaszok az összes hozzászólására itt Válaszok erre a hozzászólásra

  

  N0zer0

  senior tag

  Mondjuk ezzel a véleménnyel nem vagyok egyedül, néhány idézet a netről:

  SysRq:
  This key was meant for invoking low-level operating system functions. it behaves differently from other keys on your keyboard – when you press this key, your computer’s BIOS generates a special interrupt that tells the operating system the key was pressed. The operating system can listen for the event and do something special.

  These days, most operating systems and programs will simply ignore this key-press event. One notable exception is Linux, where the “Magic SysRq key” can send commands directly to the Linux kernel to help recover from crashes and debug the operating system.

  Scroll Lock was designed for older, text-mode environments, which had a small amount of available screen space. Pressing the arrow keys normally moved the text-entry cursor around, but people wanted a way to scroll up and down through the contents of a text screen.

  When Scroll Lock was enabled, the arrow keys would scroll the contents of the screen instead of moving the cursor.

  With modern graphical environments that include scroll bars and mouse wheels, this behavior is no longer necessary – in fact, most programs will ignore the Scroll Lock key entirely.

  One notable program that continues to obey Scroll Lock is Microsoft Excel. When Scroll Lock is enabled in Excel, pressing the arrow keys will scroll the viewing area without moving the cursor.

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