Matrix Key Pad (3 X 4)
Model : MIS-00033
Supplier : Made in China
TechshopBD, Bangladesh
This keypad has 12 buttons, arranged in a 3x4 grid. It's made of a thin, flexible membrane material The keys are connected into a matrix, so you only need 7 microcontroller pins (3-columns and 4-rows) to connect the key pad.
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