Digital Concepts - General Questions (7)

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Digital Concepts - General Questions

49.

What has happened to the advances in digital technologies over the past three decades?

A.	Slowed down considerably
B.	Continued to increase, but at a decreasing rate
C.	Made excellent progress
D.	Nothing short of phenomenal

Answer: Option D

Explanation:

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50.

The frequency of a pulse train is 2 kHz. The pulse period is ________.

A.	5 ms
B.	50 ms
C.	500 s
D.	2 s

Answer: Option C

Explanation:

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51.

Which format can send several bits of information faster?

A.	Parallel
B.	Serial
C.	Both are the same
D.	Cannot tell

Answer: Option A

Explanation:

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52.

What is the decimal value of 2^–1?

A.	0.5
B.	0.25
C.	0.05
D.	0.1

Answer: Option A

Explanation:

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53.

Serial format means digital signals are:

A.	sent over many conductors simultaneously.
B.	sent over one conductor sequentially.
C.	sent in groups of eight signals.
D.	sent in binary coded decimal.

Answer: Option B

Explanation:

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54.

Any number with an exponent of one is equal to:

A.	zero.
B.	one.
C.	two.
D.	that number.

Answer: Option D

Explanation:

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55.

A periodic digital waveform has a pulse width (t_w) of 6 ms and a period (T) of 18 ms. The duty cycle is ________.

A.	3.3%
B.	33.3%
C.	6%
D.	18%

Answer: Option B

Explanation:

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56.

How many binary bits are necessary to represent 748 different numbers?

A.	9
B.	7
C.	10
D.	8

Answer: Option C

Explanation:

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