# Digital Electronics: Why NAND and NOR gates alone are used to form a LATCH circuit?

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Avanthica
TL;DR Summary
why NAND AND NOR gates alone are used to form a LATCH circuit
Why we cannot make a LATCH circuit with logic gates other than NAND and NOR gates.?

Gold Member
TL;DR Summary: why NAND AND NOR gates alone are used to form a LATCH circuit

Why we cannot make a LATCH circuit with logic gates other than NAND and NOR gates.?
I think you can. However, recognize that all combinatorial logic can be (in fact often are) constructed from NAND and NOR gates. The fundamental boolean operations are AND, OR, and INVERT (or NOT), everything can be constructed from these. For technical reasons, it is usually easier to just make NAND and NOR gates as the basis for all higher complexity digital circuits in ICs.