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Electronics and Communication Engineering - Digital Electronics

Exercise : Digital Electronics - Section 20
1.
If we need a low noise device, we should use
BJT
FET
thyristor
UJT
Answer: Option
Explanation:
No answer description is available. Let's discuss.
2.
The principal of locality of reference justifies the use of
interrupts
DMA
virtual memory
cache memory
Answer: Option
Explanation:
No answer description is available. Let's discuss.
3.
The contents of the commands register are 23 H. Then port C
is an input port
is an output port
is both input as well as output port
none of the above
Answer: Option
Explanation:
No answer description is available. Let's 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?
1 and 2
3 and 4
1, 2 and 3
1, 2, 3 and 4
Answer: Option
Explanation:
No answer description is available. Let's discuss.
5.
Which of the following bus is used to transfer data from main memory to peripheral device?
DMA bus
Output bus
Input bus
Data bus
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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