Logic Functions and Minimization GATE 2007 Question #2709 with Solution

GATE 2007

Digital LogicLogic Functions and MinimizationmediumMCQ1 mark

The following expression was to be realized using 2-input AND and OR gates. However, during the fabrication all 2-input AND gates were mistakenly substituted by 2-input NAND gates. (a.b).c + (a'.c).d + (b.c).d + a.d . What is the function finally realized?

A1Ba' + b' + c' + d'Ca' + b + c' + d'Da' + b' + c + d'

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