keyboard N-key rollover

Strikes a series of keys simultaneously and displays the characters in the order that the keys are released. N-key rollover (at least 3-key rollover) is necessary for a typist to type at full speed without locking the keyboard or dropping characters.; 同時敲擊一系列的鍵,并按照松開鍵的次序顯示字符。N鍵滾動(至少3鍵滾動) 對打字員以全速打字而又不鎖住鍵盤或者掉字是很需要的。