$$ \begin{array}{|c|c|c|} \hline A & B & y \\ \hline 0 & 0 & 1 \\ 0 & 1 & 0 \\ 1 & 0 & 0 \\ 1 & 1 & 1 \\ \hline \end{array} $$

$$ \begin{array}{|c|c|c|} \hline A & B & y \\ \hline 0 & 0 & 1 \\ 0 & 1 & 1 \\ 1 & 0 & 1 \\ 1 & 1 & 0 \\ \hline \end{array} $$

$$ \begin{array}{|c|c|c|} \hline A & B & y \\ \hline 0 & 0 & 0 \\ 0 & 1 & 0 \\ 1 & 0 & 0 \\ 1 & 1 & 1 \\ \hline \end{array} $$

$$ \begin{array}{|c|c|c|} \hline A & B & y \\ \hline 0 & 0 & 0 \\ 0 & 1 & 1 \\ 1 & 0 & 1 \\ 1 & 1 & 0 \\ \hline \end{array} $$

$5 \mathrm{k} \Omega$

$25 \mathrm{k} \Omega$

$2 \mathrm{k} \Omega$

$1 \mathrm{k} \Omega$

AND

NAND

NOR

$O R$

NOT

AND

$O R$

NOR