Updated: 03/01/2018 by Computer Hope

Computer keyboard caps lock LEDAn indicator is a light or LED that prompts the user to the status of a hardware device. Some examples of indicators are those that show if your computer is on, your hard drive is working, or your caps lock is enabled. The picture shows the three indicator LEDs on the keyboard. These lights show whether or not the num lock, caps lock, or scroll lock are enable or disabled.

Hardware terms