To input the two most popular music notes, the eighth note and the double eighth note, on a computer keyboard, press and hold the Alt key before typing "13" or "14" on the numeric keypad. Use of Windows Alt key codes requires a keyboard with a numeric keypad or a laptop with a Num Lock key and numeric entry functionality.
- Learn how to enter Alt key codes
On a standard PC keyboard with a numeric keypad, press the Num Lock key to enable the keypad's functionality, which is indicated by an illuminated LED light next to the text Num Lock. To enter the code, simply press and hold Alt before typing the code by using the numbers on the numeric keypad.
- Enter Alt key codes on a laptop
To enable this functionality on a laptop that does not have a numeric keypad, press and hold the FN key before pressing the Num Lock key. Enter the code by holding down Alt and using substituted keys, which are usually: 7, 8 and 9 for 7, 8 and 9; U, I and O for 4, 5 and 6; J, K and L for 1, 2 and 3; and M for 0. If the laptop does not have a Num Lock key, press and hold FN+Alt before typing the code. If the laptop does not have a numeric keypad, press and hold FN+F11 to open an onscreen keypad, and enter the code there.
- Enter music notes in any text field
Use the Alt key codes "13" and "14" for a universal functionality across a number of different platforms, such as email, Twitter and public forums. Additional musical Alt key codes, such as "9836" for a double sixteenth note or "9837" for a flat note, are only usable in certain word processing software, such as Microsoft Word.