Electronics and Communication Engineering - Digital Electronics

1. 

If we need a low noise device, we should use

A. BJT
B. FET
C. thyristor
D. UJT

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

2. 

The principal of locality of reference justifies the use of

A. interrupts
B. DMA
C. virtual memory
D. cache memory

Answer: Option D

Explanation:

No answer description available for this question. Let us discuss.

3. 

The contents of the commands register are 23 H. Then port C

A. is an input port
B. is an output port
C. is both input as well as output port
D. none of the above

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.

4. 

Consider the following digital circuits:

  1. Multipliers
  2. Read only memories
  3. D-latch
  4. Circuits as shown
Which of these come under the class of combinational circuit?

A. 1 and 2
B. 3 and 4
C. 1, 2 and 3
D. 1, 2, 3 and 4

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.

5. 

Which of the following bus is used to transfer data from main memory to peripheral device?

A. DMA bus
B. Output bus
C. Input bus
D. Data bus

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.

1 2 3 4 5 6 7 8 9 10 Next »