Digital Electronics - ECE Questions and Answers

Whatsapp
Facebook
Copy
Copy Text
Copy
Copy URL
Share as Image
As Image

Assertion (A): The output of a NOR gate is equal to the complement of OR of input variables.

Reason (R): A XOR gate is a universal gate.

Both A and R are correct and R is correct explanation of A

Both A and R are correct but R is not correct explanation of A

A is true, R is false

A is false, R is true

Whatsapp
Facebook
Copy
Copy Text
Copy
Copy URL
Share as Image
As Image

The number of bits in ASCII is

Whatsapp
Facebook
Copy
Copy Text
Copy
Copy URL
Share as Image
As Image

In a D latch

data bit D is fed to S input and D to R input

data bit D is fed to R input and D to S input

data bit D is fed to both R and S inputs

data bit D is not fed to any input

Whatsapp
Facebook
Copy
Copy Text
Copy
Copy URL
Share as Image
As Image

A 4 : 1 multiplexer requires __________ data select line.

Whatsapp
Facebook
Copy
Copy Text
Copy
Copy URL
Share as Image
As Image

The number of unused states in a 4 bit Johnson counter is

Whatsapp
Facebook
Copy
Copy Text
Copy
Copy URL
Share as Image
As Image

It is desired to display the digit 7 using a seven segment display. The LEDs to be turned on are

a, b, c

b, c, d

c, d, e

a, b, d

Whatsapp
Facebook
Copy
Copy Text
Copy
Copy URL
Share as Image
As Image

For a MOD-12 counter, the FF has a t_pd = 60 ns The NAND gate has a t_pd of 25 n sec. The clock frequency is

3.774 MHz

> 3.774 MHz

< 3.774 MHz

4.167 MHz

Whatsapp
Facebook
Copy
Copy Text
Copy
Copy URL
Share as Image
As Image

100101₂ is equal to decimal number

Whatsapp
Facebook
Copy
Copy Text
Copy
Copy URL
Share as Image
As Image

A Karnaugh map with 4 variables has

2 cells

4 cells

8 cells

16 cells