NOR gate as universal gate
We have seen how NAND gate
can be used to make all the three basic gates by using that alone. Now we will
discuss the same in case of NOR gate.
The above diagram is of an
OR gate made by only using NOR gates. The output of this gate is exactly
similar to that of a single OR gate. As we can see the circuit arrangement of
OR gate using NOR gates is similar to that of AND gate using NAND gates.
The above diagram as the name suggests is of AND gate using only
NOR gate, again we can see that the circuit diagram of AND gate using only NOR
gate is exactly similar to that of OR gate using only NAND gates. Now we will
finally see how a NOT gate can be made by using only NOR gates.
The above diagram is of a
NOT gate made by using a NOR gate. The circuit diagram is similar to that of
NOT gate made by using only NAND gate. So, from the above discussion it is
clear that all the three basic gates (AND, OR, NOT) can be made by only using
NOR gate. And thus, it can be aptly termed as Universal Gate.
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