2.2. AND

The AND logic gate requires that both inputs be 1 for the output to be 1, which can be clearly read from the truth table. The same is true for three or more inputs. By carefully connecting the transistors, we can easily achieve this function. The voltage VCC will appear at the output only in the case when both transistors are on, which we will enable by bringing voltage to the A and B inputs.

Figure 2‑4 AND transistor connection with truth table and expression

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