Question

The total no of gates required to implement the expression F= AB + CD...
Select one:
O
a. 5
O b. 4
O c. 3
O d. 2​

Answer 1

Answer:

C. 3

Explanation:

For multiplying we use AND gate and for adding we use OR gate.

so in this question

A and B are connected to one AND gate

C and D are connected to one AND gate

where AB and CD are connected to one OR gate

which results in F.

Total 3 gates are required.

finally, F=AB+CD

Answer 2

The correct answer is option (c) 3.

• The given expression is A.B+C.D, so for A.B, we need an OR gate. In the same way, another OR gate is required for C.D, and for A.B+C.D we need an AND gate.
• The gate OR is a logical gateway that performs a logical function OR. Reasonable operation OR with high output (1) if one or both gate inputs are high (1). If no input is high, the result is low (0).
• The gate and the basic digital gateway that uses logical integration (∧) from the mathematical logic - AND the gate behaves according to the reality table above. HIGH output (1) output only if all inputs AND gate are HIGH (1)