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Codiode/Problems/Combinational Logic

Prove Equivalence Without a Truth Table

HardLogic CircuitAnalyze

Truth table proofs scale exponentially with input count and fail completely for complex datapath logic. The expressions Y1 = (A + B)(A + C) and Y2 = A + BC represent two different gate-level implementations of the same logic function.

Trace the algebraic expansion of Y1 to prove it is mathematically identical to Y2. Apply standard Boolean theorems like distribution, idempotence, and absorption to transform the first expression into the second. Identify the intermediate terms and laws applied at each step of the reduction.

Constraints

  • Apply only Boolean algebraic theorems to transform the expression.
  • Do not rely on enumerating the possible states of A, B, and C.
  • Identify the correct intermediate terms during standard algebraic expansion.

Topics

boolean algebralogic simplificationalgebraic proof

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