Subtractors MCQ Quiz in தமிழ் - Objective Question with Answer for Subtractors - இலவச PDF ஐப் பதிவிறக்கவும்

So, Two HS and one OR gate is required

\(F \to \bar S{I_0} + S{I_1} = \bar qp + q\bar p = p \oplus q\)

\(G = \bar S{I_0} + {\rm{S}}{{\rm{I}}_1} = {\rm{\bar q}}\left( {\rm{o}} \right) + {\rm{q\bar p}} = {\rm{\bar pq}}\)

The above circuit implements half subtractor circuit The No of NOR gates required   to implement above Boolean function is 5

Number of (NAND (or) NOR) gates required to implement (Half adder (or) Half subtractor) = 5 = x

No of NAND (or) NOR required to implement full adder (or) full subtractor = 9 = y

∴ 2x + y = 19

For Half adder sum = A⊕ B

C_out = AB

Half subtractror Difference = A ⊕ B

\({B_{out}} = \bar AB\;\)

Full adder sum = A ⊕ B ⊕ C_in (or) A ⊙ B ⊙ C_in

Carry = AB + C_in(A⊕B)

Full subtractror Difference = A ⊕ B ⊕ B_in (or) A ⊙ B ⊙ B_in

\(Borrow = \bar A\bar B + {B_{in}}\left( {A \odot B} \right)\)