How many gates are required to design ,` y=A+barA.B` ? Also name the gates

Options

A. 1, OR gate
B. 2, AND and OR gate
C. 3, AND, NOT and OR
D. 4, two NOT gates and two AND gates

Answer

A

Explanation

`y=A+barA.B=A(1+B)+barA.B [ :' 1+B=1]`
`=A+(A+barA)B=A+1.B=A+B`
which is for OR gate.
It means, `1`, OR gate is required for the above design.