Electronics and Communication Engineering - Digital Electronics

41. 

If memory chip size is 256 x 1 bits, the number of chips required to make 1 k byte memory is

A. 8
B. 12
C. 24
D. 32

Answer: Option D

Explanation:

(1024 x 8)/(256 x 1 ) = 32.


42. 

Computers use RC circuit for edge triggering.

A. True
B. False

Answer: Option B

Explanation:

No, gates are used for edge triggering.


43. 

The function Y = AC + BD + EF is

A. POS
B. SOP
C. Hybrid
D. none of the above

Answer: Option B

Explanation:

It is sum of products.


44. 

Assertion (A): A multiplexer can be used for data routing.

Reason (R): A multiplexer has one input and many outputs.

A. Both A and R are correct and R is correct explanation of A
B. Both A and R are correct but R is not correct explanation of A
C. A is true, R is false
D. A is false, R is true

Answer: Option C

Explanation:

Multiplexer has many inputs but one output.


45. 

A. A + B + C
B. ABC
C. ABC
D. A + B + C

Answer: Option B

Explanation:

.