Key rollover is the ability of a computer keyboard to correctly handle several simultaneous keystrokes, often important in gaming as well as for testing rapid key pressing and reaction time. A keyboard with n-key rollover (NKRO) (also known as full key rollover) can correctly detect input from each key on the keyboard at the same time, regardless of how many other keys are also being pressed.
Key rollover is the ability of a computer keyboard to correctly handle several simultaneous keystrokes, often important in gaming as well as for testing rapid key pressing and reaction time. A keyboard with n-key rollover (NKRO) (also known as full key rollover) can correctly detect input from each key on the keyboard at the same time, regardless of how many other keys are also being pressed.
Source: Wikipedia "Key rollover" · CC BY-SA 4.0
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