Introduction to Digital Systems – Exercise – 1

1. Digital signals :

(a) vary smoothly, then change abruptly to new values.
(b) consist of codes of high-level and low-level signals.
(c) vary smoothly continuously.
(d) have periods of high-level and low-level signals, then change to continuous signals.

Answer
Answer : (b)
Explanation
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2. Analog signals :

(a) vary smoothly, then change abruptly to new values.
(b) consist of codes of high-level and low-level signals.
(c) vary smoothly continuously.
(d) have periods of high-level and low-level signals, then change to continuous signals.

Answer
Answer : (c)
Explanation
No answer description available for this question. Let us discuss.

3. Digital systems represent quantities :

(a) using more bits in its binary codes as the quantity value increases.
(b) using more bits in its binary code as more accuracy is required.
(c) using binary codes with just two levels – 1 or 0, high level or low level.
(d) all of the above.

Answer
Answer : (d)
Explanation
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4. Analog quantities :

(a) usually have slow response and less than high accuracy.
(b) can be maintained at very high accuracy at very high computing speeds.
(c) are impossible to compute.
(d) either have slow response or very high accuracy.

Answer
Answer : (a)
Explanation
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5. Digital quantities:

(a) usually have slow response and less than high accuracy.
(b) can be maintained at very high accuracy at very high computing speeds.
(c) are impossible to compute.
(d) either have slow response or very high accuracy.

Answer
Answer : (b)
Explanation
No answer description available for this question. Let us discuss.
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