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NAND to INVERTER XOR from NAND XOR from NOR XOR from NOR/NAND

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Verilog Tutorial.
Digital Basics Tutorial.
XOR from only NOR gate only.
XOR Truth Table:-

A B Y
0 0 0
0 1 1
1 0 1
1 1 0

XOR equation = A’B + AB’
NOR Truth Table

A B Y
0 0 1
0 1 0
1 0 0
1 1 0

NOR equation = A’ B’
Digital logic gate conversion related interview questions. XOR from NOR., NAND to Inverter and XOR from NAND. Lets sta1rt our discussion with conversion for xor from nor gate only. The truth tables of XOR and NOR gates are below.
Check the circuit for NOR to inverter (equivalent of NAND to inverter). So the complete circuit for XOR using NOR gates is shown below. Diagram shown below.
PICS
Reformat XOR equation by following steps below:
XOR is also know as Exclusive OR.  
Step 1 :- A'B + AB' +AA’ + BB’ = [(A’+B') (A+B)] using postulate P4 and theorems T7, T8 and T9
Step 2 :- [(AB)'(A’B’)’] using theorems T7, T8 and T9
In step 2, we do invert of A and invert of B.
Derive XOR by only using NOR gates. Steps below.
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Interview Questions. Main, FPGA, Digital basics  
XOR from NAND.
XOR from NOR/NAND.
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