Logic gates and switching ckt

Question

1- simply the following logic exp F=AB'+ABC'+ABCD+ABCD' and realize it using NADND GATE only ..

Answer 1

F = AB' + ABC' + ABCD + ABCD'

   = AB' + ABC' + ABC(D + D')

   = AB' + ABC' + ABC

   = AB' + AB(C' + C)

   = AB' + AB

   = A(B' + B)

   = A

To realize F = A, we'll require 2 NAND gates

Comments

exactly ..i got same thanks .. @just_bhavana

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y u require 2 nand gate final f give a which is just input so i think 0 nand gates required.

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Zero NAND gate is required because simply we transfer the input a to the output of the function f.