Electronics and Communication Engineering - Digital Electronics

11. 

A Karnaugh map with 4 variables has

A. 2 cells
B. 4 cells
C. 8 cells
D. 16 cells

Answer: Option D

Explanation:

24= 16.


12. 

An 8 bit data is to be entered into a parallel in register. The number of clock pulses required is

A. 8
B. 4
C. 2
D. 1

Answer: Option D

Explanation:

In a parallel in register only one pulse is needed to enter data.


13. 

Which of the following is error correcting code?

A. EBCDIC
B. Gray
C. Hamming
D. ASCII

Answer: Option C

Explanation:

Hamming code is widely used for error correction.


14. 

A universal shift register can shift

A. from left to right
B. from right to left
C. both from left to right and right to left
D. none of the above

Answer: Option C

Explanation:

Both left to right and right to left operations are possible in universal shift register.


15. 

Available multiplexer IC package can have a maximum of 8 inputs.

A. True
B. False

Answer: Option B

Explanation:

16 : 1 1C multiplexer is also available.