Keyboard technology

Keyboard construction, in four layers, of a typical notebook computer keyboard

Dome switches mesh with keys (keyboard is upside down in this image)

Computer keyboards can be classified by the switch technology that they use. Computer alphanumeric keyboards typically have 80–110 durable switches, one for each key. The choice of switch technology affects key response (the positive feedback that a key has been pressed) and travel (the distance needed to push the key to enter a character reliably). Newer keyboard models use hybrids of various technologies to achieve greater cost savings.

单词	Scissor switch
释义	Scissor switch 英语百科 Keyboard technology Computer keyboards can be classified by the switch technology that they use. Computer alphanumeric keyboards typically have 80–110 durable switches, one for each key. The choice of switch technology affects key response (the positive feedback that a key has been pressed) and travel (the distance needed to push the key to enter a character reliably). Newer keyboard models use hybrids of various technologies to achieve greater cost savings.
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Scissor switch

Keyboard technology