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Codiode/Problems/Combinational Logic

Determine Whether Two Different Circuits Implement the Same Function

HardLogic CircuitAnalyze

Logic synthesis tools frequently produce vastly different gate-level netlists for the exact same behavioral specification. The schematic displays two distinct combinational circuits driven by identical four-bit inputs A, B, C, and D. Circuit one generates output Y1 using a multi-level network of NAND and NOR gates. Circuit two generates output Y2 using a shallower network of AND, OR, and XOR gates.

Extract the Boolean expressions for Y1 and Y2. Simplify both algebraic expressions to their canonical Sum-of-Products form to evaluate structural equivalence without relying on exhaustive truth table generation.

Constraints

  • Do not use truth tables for verification.
  • Expressions must be reduced to canonical Sum of Products (SOP) form.
  • Outputs Y1 and Y2 must be compared algebraically.

Topics

Boolean AlgebraStructural EquivalenceCanonical SOPLogic Synthesis

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