Microcontroller keyboard key matrix 4*4 4X4 A keyboard 16 key industrial keyboard row scan
![Microcontroller keyboard key matrix 4*4 4X4 A keyboard 16 key industrial keyboard row scan](http://ae04.alicdn.com/kf/H3144e9ad92dd45668f25f8cc4481bad8u.jpg)
sku: 1005001715977250
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$1.75
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