näppäimistölukko

Näppäimistölukko, also known as keyboard lock, is a feature found on many electronic devices, particularly laptops and some desktop keyboards, that disables the main typing keys. This function is typically activated by pressing a specific key combination, often involving the 'Fn' key and another key like 'F1' through 'F12' or a dedicated lock icon key. The purpose of the näppäimistölukko is to prevent accidental keystrokes or input when the device is being transported, cleaned, or when a user wants to prevent unauthorized typing.

The visual indicator for an active näppäimistölukko varies by device. It might be a small icon displayed on the screen, often resembling a keyboard with a line through it, or a dedicated LED light on the keyboard itself. To deactivate the näppäimistölukko, the same key combination that activated it is usually pressed again. In some cases, especially on older systems or for specific types of locks like Scroll Lock, the deactivation might involve a different key or a simple toggle.

While the term näppäimistölukko most commonly refers to disabling the alphanumeric keys, it can sometimes encompass other locking functions such as Num Lock, which controls the numeric keypad, or Caps Lock, which locks the capitalization of letters. Understanding how to activate and deactivate the näppäimistölukko is a basic aspect of device usage that can enhance user experience by preventing unwanted input.