SOP (Digital)

Question

The sum of product (SOP) form of logic expression is most suitable for designing logic circuit using only

A) NAND gate

B)NOR gate

Comments

ok tnks:)

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with either NOR or NAND we can design, but

when you use SOP form, no.of NAND gates less compared to NOR

due to Sum of Products = AND ( 1^st level ) - OR ( 2^nd level ) realization = NAND - NAND

 

when you use POS form, no.of NOR gates less compared to NAND

due to Products of Sums = OR ( 1^st level ) - AND ( 2^nd level )  realization = NOR - NOR

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thanks :)

Answer 1

In SOP we have AND-OR so here we can replace it with NAND-NAND.

In POS we have OR-AND so here we can replace it with NOR--NOR.