COMPUTER SCIENCE AND ENGINEERING
DIGITAL LOGIC
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]


A )X = AB


B) X = ABC


C) X = A + B + C


D) X = AB + C

Detailed explanation1: Detailed Solution. A . B. C = D is the expression for three input AND gate.
Detailed explanation2: y = a’bc’ + ab’c’ + ab’c The combinational circuit constructed from these two equations is shown in (a) of Figure 1.4(f). . Each 3variable AND term is replaced by a 3input AND gate.
Detailed explanation3: 3 input NAND Gate The Boolean expression of the logic NAND gate is represented as the binary operation dot(.). Where A, B, and C are the inputs and Y is the output.
Detailed explanation4: Sometimes you need to AND more than two inputs together. In fact, 3and 4input AND gates are just as common as the dualinput variety.
Detailed explanation5: Solution : ‘bar((A+B))*bar((A*B))=1‘ <br> Now ‘bar((0+0))*bar((0+0))=1*1=1‘ <br> Thus, both inputs A and B should be zero. Step by step solution by experts to help you in doubt clearance & scoring excellent marks in exams.