ITPEC FE Morning April 2023 Question 20

Question

Which of the following is the logic circuit that is equivalent to the logical expression A̅BC + AC?

Accepted Answer

c) [Figure: Logic circuit: A and B go into an OR gate; its output and C go into an AND gate, which gives the output.]

Answer

a) [Figure: Logic circuit: A and B go into an OR gate, whose output passes through a NOT gate into a second OR gate; B and C go into an AND gate, whose output is the other input of the second OR gate, which gives the output.]

Answer

b) [Figure: Logic circuit: A passes through a NOT gate into an OR gate; A and B go into a first AND gate, whose output goes with C into a second AND gate; the second AND gate’s output is the other input of the OR gate, which gives the output.]

Answer

d) [Figure: Logic circuit: A passes through a NOT gate into a first AND gate together with B; B and C go into a second AND gate; the outputs of the two AND gates go into an OR gate, which gives the output.]

Explanation