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Digital-electronics Questions Set 105:

Quiz Mode

How many flip-flops are needed to design a mod-24 counter?

Solution:

How many flip-flops are required to design a mod-10 counter?

Solution:

The basic building blocks of the arithmetic unit in digital computers are

Comparators

Subtractors

Adders

Multiplexers

Solution:

Find the speed of an electron after it has moved through a potential difference of 5000 V.

2.4×10⁷ m/s

4.2×10⁻⁷ m/s

4.2×10⁷ m/s

2.4×10⁻⁷ m/s

Solution:

The maximum noise voltage that may appear at the input of a logic gate without changing the output's logic state is called?

Boom noise

Noise end

Noise immunity

Noise margin

Solution:

The input bits to a full-adder are A=1 and B=0. Determine the values of the carry generate (Cg) and carry propagate (Cp) signals.

Cg=1, Cp=1

Cg=1, Cp=0

Cg=0, Cp=1

Cg=0, Cp=0

Solution:

What is the main use of Hamming code?

To encode bits of data for transmission.

To encode data for encryption and other security reasons.

To detect and correct bit errors in data.

To allow user to detect virus in data.

Solution:

Which of the following best describes the fusible-link PROM?

Programmed by the manufacturer, re-programmable

User-programmable, re-programmable

User-programmable, one time programmable

Programmed by the manufacturer, one time programmable

Solution:

In a 3-bit asynchronous down counter, the initial content is ________

000

111

010

101

Solution:

Which statement describes the operation of a negative-edge-triggered D flip-flop?

The logic level at the D input is transferred to the Q output on the negative edge of the CLK signal.

The Q output is always identical to the CLK input if the D input is High.

The Q output is always identical to the D input.

None of the above.

Digital-electronics Questions Set 105:

How many flip-flops are needed to design a mod-24 counter?

Solution:

How many flip-flops are required to design a mod-10 counter?

Solution:

The basic building blocks of the arithmetic unit in digital computers are

Solution:

Find the speed of an electron after it has moved through a potential difference of 5000 V.

Solution:

The maximum noise voltage that may appear at the input of a logic gate without changing the output's logic state is called?

Solution:

The input bits to a full-adder are A=1 and B=0. Determine the values of the carry generate (Cg) and carry propagate (Cp) signals.

Solution:

What is the main use of Hamming code?

Solution:

Which of the following best describes the fusible-link PROM?

Solution:

In a 3-bit asynchronous down counter, the initial content is ________

Solution:

Which statement describes the operation of a negative-edge-triggered D flip-flop?

Solution:

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