Question

What is the Boolean expression for the gate circuit .

                                    

Solution

Correct option is

The circuit is a combination of AND and NOT gates. The output of the NAND gate is connected to the input of a NOT gate. The combined circuit is called a NAND gate. The Boolean expression for the NAND operation is 

           

Which that the output X is just the negation of the output of the AND operation.

SIMILAR QUESTIONS

Q1

Calculate the current gain  of a transistor if the current-gain  is 0.98.

Q2

In a silicon transistor, a change of 7.98 mA in the emitter-current produces a change of 7.8 mA in the collector-current. Find the required change in the base current to produce an equivalent change in the collector current. 

Q3

A common-emitter transistor amplifier has a current gain of 50. The collector resistance is  and the input resistance is , calculate the output voltage if input voltage is 0.01 V. 

Q4

The internal resistance of a triode value is  and the amplification factor is 15. What is the potential (at constant-potential) is required to increase the plate current from 6 mA to 9 mA?

Q5

Which logic gets is represented by the following combination of logic gets?

                                         

Q6

The Boolean equation for the circuit given in the figure is :

                                                      

Q7

The given symbol represents :            

                                                                   

Q8

Two voltage signals A and B. Which of the following statements is true?

                                       

Q9

In Boolean algebra, X = A.B implies that

Q10

Which of the following gates serves as the building blocks is digital circuits?