ITPEC FE Subject A April 2024 Question 16

Question

Which of the following is equivalent to the circuit below?

[Figure: Circuit: x and y go into a NAND gate; the NAND output and z, inverted by an input bubble, go into an OR gate whose output is f(x,y,z).]

Accepted Answer

d) [Figure: Option d: x, y and z go into a single NAND gate whose output is f(x,y,z).]

Answer

a) [Figure: Option a: x, y and z go into a single AND gate whose output is f(x,y,z).]

Answer

b) [Figure: Option b: y and z, each inverted by an input bubble, go into an AND gate; x and the AND output go into an OR gate whose output is f(x,y,z).]

Answer

c) [Figure: Option c: y and z go into an OR gate; x and the OR output go into a NAND gate whose output is f(x,y,z).]

Explanation