Nand Gate Transistor Diagram. A basic circuit using any general purpose bipolar transistor such as the bc549 bc548 or bc547 could be used to construct the gate. The truth table below shows the behavior of a nand gate.
The truth table is also shown if your build doesn t match the states listed in there then you have done something wrong. The nand gate is actually somewhat special in that its also referred to as a universal logic gate being that it can be used in combinations to make. We can see that the output is a logic low when all inputs are in high logic level.
This is a transistor transistor logic ttl nand gate circuit using bipolar junction transistors.
The led will be on until you press both of the pushbuttons. Order gate wires on poly step 2. Nand is called as the universal gate because all the logical combinations can be build using the nand gates. The truth table below shows the behavior of a nand gate.
