How do you write the n when you write pena on the computer?

When writing "pena" on a computer, the letter "n" is typed using the standard keyboard key labeled "N" or "n." If you specifically want to write the Spanish Word "peña," which includes the tilde over the "n," you would type "ñ" by pressing "Alt" and typing "0241" on the numeric keypad (for Windows) or using a special character shortcut (like "Option + n" followed by "n" on a Mac).