WHAT IS SCRLL LOCK ON YOUR KEYBOARD FOR

It was used in word processors in the distant DOS era to scroll to lock. Today, when you press this time, there is really no use for anything other than the scroll lock light is on.

Similarly, the Print Scrn button is a command from the former DOS, which can also be used to print out the screen in the window, but it is not very useful. Even more inexplicable is the System Requirement Key (sysrq) in the same key, which is an abbreviation for System Request, and is useless except for computer operating systems such as Linux. Finally, there is the pause or pause button, which is also a "historical relic" left by DOS, which can command the computer to stop or pause the execution of a program, but for most Windows users, this key can also be ignored.

Scroll Lock was very useful in the DOS era, due to the display technology at that time, the screen was limited to 80 characters wide and 25 lines of text, and when reading documents, it was very convenient to use this key to scroll through the page. With the development of technology, the role of the scroll lock key is getting smaller and smaller after entering the Windows era, but it is still somewhat useful in Excel: if you use the page turn key (such as page up and page down) when the scroll lock is off, the selected area of the cell will move accordingly; Conversely, if you want to scroll without changing the selected cells, just press scroll lock.

Typing English capital letters is mandatory to press.

The subject should be talking about the scroll lock key:

The Scroll Lock key first appeared on the 83 keyboard of IBM's PC XT model and the 84 keyboard with AT interface, and this key is not only found on the 101 keyboard of the PC, but also on the "enhanced" keyboard of the apple muscle. This key was very useful in the DOS period, due to the display technology at that time, the screen was limited to display only 25 lines of wide, 80 characters long text, when reading documents, using this key to clear the page very conveniently.

With the development of technology, after entering the Windows era, the role of the scroll lock key is getting smaller and smaller, but it is still very useful in Excel: when the user is in Excel, when the user is in Excel, when pressing the up and down keys (or using the page turn key (such as page up and page down) to scroll, the cursor will be locked and the page will be scrolled; If you let go of this key, the page is locked by scrolling the cursor when you press the up and down keys (or use the page turn keys such as page up and page down).