What Is Function Key (F Key)?

Function keys are the key on the keyboard and are always there for you. They're like your best friends—they're there for you when you need them, and they'll never let you down. And just like your best friends, function keys come in different shapes and sizes. Some are tall and wide, while others are short and stubby—but they all have one thing in common: they're always there when you need them! Function keys can be found on your computer keyboard, but they don't always look like regular letters or numbers. Sometimes they look like little pictures of things like a calculator or a mouse pointer (which is how we know which ones operate which programs). Function keys might be labeled with a letter or number, but sometimes they're not labeled! It's up to you to figure out what each one does by trial and error until something happens that makes sense (like printing something). The function keys are a staple of the modern keyboard. They are present on all modern Mac and Windows keyboards, but they can be a little tricky to master. For instance, if you're using a laptop, the function keys might not be separate keys at all—they might be sub-functions of other keys that can be activated with the help of a separate key like Fn. In this case, pressing F2 might mean toggling your screen brightness up or down, while pressing F3 will mean adjusting audio volume levels. The top row of a regular keyboard has function keys that help perform various functions; for example, Microsoft Windows users can press ALT + F4 to close the active program. In earlier models, Apple computers did not have function keys, but current keyboards feature them on their top row just like PC keyboards do now!