The clicking sound they so love, by the way, is because of the buckling spring mechanism, where the spring buckles under pressure from your finger until a lever hits a sheet below.

• 老式键盘之所以能发出他们如此着迷的答答声，要归因于其“座曲式”结构。按键的弹簧在手指的按压下不断弯曲，直至弹簧连接的一个杠杆触及按键底部的一层薄膜。