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发信人: enjoy (PS＋DW＋Swish＝我的新主页！), 信区: WinNT
标 题: Scroll Lock键的作用（英文）
发信站: 荔园晨风BBS站 (Wed Sep 17 09:36:48 2003), 站内信件
说真的，用电脑那么久了，还不知道这个键有什么用，原来是
在excel里面有这么一个作用，ft
Scroll lock
From Wikipedia, the free encyclopedia.
Scroll Lock is a key (with an associated status light) on a
computerkeyboard. The behavior of the key depends on the particular
software in use.In many modern applications, the Scroll Lock key
has no assigned function.
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 arrowkeys. When the scroll lock mode was on,
the arrow keys would scroll the contents of a text window.
In this sense, Scroll Lock serves a similar purpose to Num Lock
and CapsLock: it enables a secondary function of a group of keys.
Today, this particular use of Scroll Lock is rare. (One modern
program that does use this behavior is Microsoft Excel.) In modern
GUI environments, scrolling is usually a ccomplished using other
meanssuch as scrollbars.
In Linux command line sessions, the Scroll Lock key is used to
pause screenoutput. This behavior 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 behavior. This usage could
potentially cause confusion since screen pausing behavior is not
intrinsically a part of the Scroll Lock key. In Microsoft DOS,
the Pause key pauses the screen output.
In FreeBSD and other BSD descendents Scroll Lock still functions
similarly to the orginal IBM's design.
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