Radio buttons were named after the actual buttons used on old radios to switch between radio stations.

When a button was pressed, all other buttons would pop out, leaving the pressed button the only button in the "pushed down" state. This is why radio buttons are mutually exclusive, meaning that only one radio button in a group can be selected at a time.

They are often used in forms, surveys, and quizzes.

Anyway, let me not jump ahead of myself. Later on this course, you’ll become a pro at knowing how to use them.

Let’s continue.