It depends on your hardware, your operating system and the application you are using.
Some notebook PCs have a way of simulating a numeric keypad by using additional meta keys (Fn, Ctrl, Alt etc)
Some operating systems support alternative keyboard layouts or input method editors. For example I have a Windows PC with a UK keyboard (and hence no problem with £) in the system notification area I have a keyboard icon from which I can choose UK or UK-extended keyboards. The extended one lets me compose additional accented characters. Maybe there is an extended keyboard for your locale that supports a key combination for £.
Finally applications such as MS Word have their own means of inputting special characters - see the application help.
4
Possible duplicate of How to input special characters w/o numpad?
– Dave – 2016-06-26T06:59:09.060Hi @Dave! The other question has a specific constraint that I did not have - "without any kind of numeric keyboard (even not one accessed by FN)". This question is more open-ended and ultimately allowed for the Accepted Answer below which specifically pointed me towards an answer that would not satisfy the other question. – Ryan Shripat – 2016-06-27T12:13:26.223
Possible duplicate of Typing strange letters¿ w/o numpad?
– Ben N – 2016-06-27T22:46:04.377Hi there, @BenN, like the other potential duplicate, the one you proposed doesn't include the answer (15 upvotes, more than both of the other questions' top answers) that I accepted, which is to use the function key. – Ryan Shripat – 2016-06-28T13:07:10.913
1Ah, that makes sense. I've retracted my close vote and edited the question to make its non-duplicateness clearer. – Ben N – 2016-06-28T15:20:12.797
I know it's not helpful but doing this is very easy on a Mac. Little annoyances like this one make me prefer my work Mac to my home Windows machine. – jcollum – 2017-02-26T17:31:44.260
So how do you do it on the Mac, @jcollum ? – Ryan Shripat – 2017-03-01T17:16:29.357
1é: hold down option, press e twice; ø: option o; ê : option i then e; and so on; if you use the mac's on-screen keyboard and press option the modifier keys are highlighted – jcollum – 2017-03-02T18:48:53.920
@jcollum, are there different keyboard layouts that you can use on the Mac? Because this method sounds annoying for anything more than a sentence or two. It's pretty nifty for one-offs though. – Ryan Shripat – 2017-03-06T12:17:56.593
1That's the US-English layout. It took me about 5 seconds to find how to switch my keyboard to Kurdish, for instance; it's easy. – jcollum – 2017-03-06T15:15:58.510
3shift + 3 ;) .. – Matt Ellen – 2010-10-20T23:04:08.000