Computer keyboard

Laptop keyboard with its keys (except the space bar) removed, revealing crumbs, pet hair and other detritus to be cleaned away.

In computing, a computer keyboard is a typewriter-style device which uses an arrangement of buttons or keys to act as a mechanical lever or electronic switch. Following the decline of punch cards and paper tape, interaction via teleprinter-style keyboards became the main input device for computers.

单词	Alphanumeric Keyboard
释义	Alphanumeric Keyboard 英语百科 Computer keyboard In computing, a computer keyboard is a typewriter-style device which uses an arrangement of buttons or keys to act as a mechanical lever or electronic switch. Following the decline of punch cards and paper tape, interaction via teleprinter-style keyboards became the main input device for computers.
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Alphanumeric Keyboard

Computer keyboard