Th 4x4 matrix kypad usually is usd as input in a projct.
It has 16 kys in total, which mans th sam input valus.
Th kys of ach row and column ar connctd through th pins outsid – pin Y1-Y4 as labld bsid control th rows, whn X1-X4, th columns.
It has 16 kys in total, which mans th sam input valus.
Th kys of ach row and column ar connctd through th pins outsid – pin Y1-Y4 as labld bsid control th rows, whn X1-X4, th columns.
