The gate circuit can be shown by giving two inputs A and B. 
Output of NOR gate, Y1=A+B Output of NAND gate, Y2=Y1⋅Y1=A+B⋅A+B=A+B+A+B=(A+B)+(A+B)=A+B Output of NOT gate, Y=Y2=A+B which is the output of NOR gate. Altemative :
Same as NOR Gate NOR Gate 001101011000 Note : NOR and NAND gates are said to be universal building blocks.
NEET UG 2008 — Physics Modern Physics
2008mcqhard
The circuit is equivalent to 
Official previous-year question
Held on 30 Apr 2008 · Verified 9 Jul 2026.
Options
- A
AND gate
- B
NAND gate
- C
NOR gate
- D
OR gate
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