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I have a VAIO laptop which, like most laptops, has an Fn key. In order for me to switch from the regular keyboard to the numeric keypad on the laptop, I am required to use NumLock; simply pressing the Fn key and then the number keys does not do anything.

Is there any way to make it so that I can just hold the Fn key to type numbers, instead of turning on NumLock?

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Laptop Fn keys are not typically available to the operating system. You should be able to leave NumLock on then use Fn-J, for example, for "1" without it interfering with other keyboard functionality. – Dennis Williamson Mar 16 '11 at 2:51
@Dennis: But if I leave it on, then I can't type letters without holding Fn... not all laptops behave the same way with NumLock. :( – Mehrdad Mar 16 '11 at 2:54

You didn't tell us what OS, but if it's Windows, you can use KeyTweak.

If it's Linux, you'll probably want to use xmodmap in the X windows system.

I'm not sure how to do this in Mac OS X, but it is most probably similar to the Linux approach.

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Yeah, it's Windows, sorry I forgot to write it. I took a look at keytweak, but I'm not sure how it helps -- would you please elaborate on it a bit? – Mehrdad Mar 16 '11 at 2:52

Enable Numlock using the Windows onscreen keyboard (osk.exe) instead of the physical keyboard and then use Fn to enter the numbers.

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