按規定的樣式布局打字鍵和功能鍵的一種排列。
An arrangement of typing and function keys laid out in a specified manner.
一個典型的鍵盤包括一組位於鍵盤中間的標準鍵、許多功能鍵和一些附加鍵。
A typical includes a group of standard keys set in the center of the keyboard, many function keys and several additional keys.