1819, from key (n.1) in sense of "mechanism of a musical instrument" + board (n.1). Originally of pianos, organs, etc., extended to other machines 1846. The verb is first recorded 1926 (implied in keyboarding).
权威例句
1. To close your document, press CTRL+W on your keyboard.
关闭文件时要同时按键盘上的CTRL键和W键。
2. I was expected to familiarise myself with the keyboard.
对我的要求是熟悉键盘。
3. Tanya's hands rippled over the keyboard.
塔尼娅的双手在琴键上翻飞。
4. He studied the keyboard carefully, one finger poised.
他仔细研究了键盘,一个手指随时准备敲击。
5. A bad keyboard can make life unnecessarily difficult.