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keypad reference design (Experiments) | Open App Note

Experiments

PainfulDiodes

Components (7)

Reference	Value	Description
U1	74LS32
U2	SN74LS373
U3	74LS244
U4	74LS04
D00-D03,D10-D13	1N4148
R1-R4	10k
SW00-SW03,SW10-SW13	SW_Push_45deg

Experiments schematic

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