Mine

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l.75 1 & 0 & 0 &
                 0 \\
?



code 

is changed by the micro-controller. The sequence for the rotation of the stepper motor in the clockwise direction is given in the table1

\begin{tabular}{c|c|c}
1 & 0 & 0 & 0 \\
0 & 1 & 0 & 0 \\