Implement the inverter using nand/NOR gate

Before implementing the logic, we will have a look at the truth table of the NAND gate and the inverter.

NAND GATE

A	B	O
0	0	1
0	1	1
1	0	1
1	1	0

NOT GATE

A	O
0	1
1	0

Fro the NAND gate truth table we can conclude the following
When both the inputs are zero(0) ==> output is 1 (same as inverter)
when both the inputs are one(1) ==> output is 0 (same as inverter)

Thus we can implement the not gate by connecting the both inputs together as shown below

There is another way of implementation of inverter using NAND gate , from truth table when input pin A is high (logic one) Nand gate behavious as INVERTER

Before implementing the logic, we will have a look at the truth table of the NOR gate and the inverter.

NOR GATE

A	B	O
0	0	1
0	1	0
1	0	0
1	1	0

NOT GATE

A	O
0	1
1	0

case I:
From the NOR truth table we can see that when
both the inputs are zero(0) ==> output is 1(same as inverter)
both the inputs are one (1) ==> output is 0 (same as inverter)

Case II :
second way of implementation of Inverter using Nor Gate.