plural of dead key

A special modifier key on a typewriter or computer keyboard, typically used to attach a specific diacritic to another character.

Any of certain keys of a computer keyboard that switch between certain states and are represented by LEDs.

plural of lock key

A keycard.

plural of card key

(computing) Any of a set of keyboard keys marked with directional arrows, used for navigation through documents and lists etc.

plural of arrow key

plural of CD key

A serial key of a program to be installed from a compact disc.