Type @ symbol with alt+64

Question

I wanted to know if there is a way to type an @ symbol by pressing Alt+64 like in Windows. I use both Spanish and English keyboard layouts so I find it useful.

Answer 1

Like Windows uses the Alt-Combos for ASCII, Ubuntu knows a similar input method for Unicode characters.

To enter the @ sign, which would be Unicode U+40 (hexadecimal!), press and hold Ctrl+Shift and then press U,4,0.

This works the same for all Unicode chars, like U+2744 for a snowflake.