Digital Concepts - General Questions (12)

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Digital Concepts - General Questions

89. 

What are the symbols used to represent digits in the binary number system?
A. 0,1
B. 0,1,2
C. 0 through 8
D. 1,2

Answer: Option A

Explanation:

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90. 

What is a digital-to-analog converter?
A. It takes the digital information from an audio CD and converts it to a usable form.
B. It allows the use of cheaper analog techniques, which are always simpler.
C. It stores digital data on a hard drive.
D. It converts direct current to alternating current.

Answer: Option A

Explanation:

A DAC converts an abstract finite-precision number (usually a fixed-point binary number) into a concrete physical quantity (e.g., a voltage or a pressure).

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91. 

The range of voltages between VL(max) and VH(min) are ________.
A. unknown
B. unnecessary
C. unacceptable
D. between 2 V and 5 V

Answer: Option C

Explanation:

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92. 

The generic array logic (GAL) device is ________.
A. one-time programmable
B. reprogrammable
C. a CMOS device
D. reprogrammable and a CMOS device

Answer: Option B

Explanation:

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93. 

Which of the following statements does NOT describe an advantage of digital technology?
A. The values may vary over a continuous range.
B. The circuits are less affected by noise.
C. The operation can be programmed.
D. Information storage is easy.

Answer: Option A

Explanation:

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94. 

In the decimal numbering system, what is the MSD?
A. The middle digit of a stream of numbers
B. The digit to the right of the decimal point
C. The last digit on the right
D. The digit with the most weight

Answer: Option D

Explanation:

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95. 

Any number with an exponent of zero is equal to:
A. zero
B. one
C. that number
D. ten

Answer: Option B

Explanation:

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