How can I enter ASCII characters on a MacBook?

[KPeh]

As per the title? Alt-Cmd and various combinations of control, fn and enter don't seem to be working. Thanks .

Eg: I want to do something like alt-(number)

 

[KPeh]

I'm trying to enter the long hyphen (em) without copying and pasting. Can't find it on the character board either. I'd just like to type alt-0151 (or whatever it is)..!

 

[KPeh]

I have... No luck.

Maybe it's not possible. Maybe Macs just suck.

This has got to work!