Question

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

Solution

Correct option is

NAND and NOR gates

The OR or the AND or the NOT gates alone cannot give a different gate by repeated use, i.e., two or-more OR or AND or NOT gates do not yield a new gate. But the repeated use of NAND (or NOR) gates can give all other gates like OR, AND and NOT. Hence the NAND (or the NOR) gate serves as a building block in digital circuits.

SIMILAR QUESTIONS

Q1

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. 

Q2

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. 

Q3

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?

Q4

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

                                         

Q5

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

                                                      

Q6

The given symbol represents :            

                                                                   

Q7

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

                                       

Q8

In Boolean algebra, X = A.B implies that

Q9

What is the Boolean expression for the gate circuit .

                                    

Q10

What is the name of the gates