Fundamentals Of Digital Electronics2
This quiz covers the basics of digital electronics, exploring fundamental concepts such as logic gates, logic levels, and binary arithmetic.
- 1.
A logic gate is an electronic circuit which
- A.
Makes logic decisions
- B.
Allows electron flow only in one direction
- C.
Works on binary algebra
- D.
Alternates between 0&1 values
Correct Answer
A. Makes logic decisionsExplanation
A logic gate is an electronic circuit that makes logic decisions by processing input signals and producing output signals based on predefined logical rules. It uses Boolean algebra to determine the output based on the input values. The logic gate analyzes the input signals and determines whether the output should be high or low, representing true or false, on or off, or 1 or 0. Therefore, it can be said that a logic gate makes logic decisions.Rate this question:
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- 2.
In negative logic, the logic state 1 corresponds to
- A.
Negative logic
- B.
Zero voltage
- C.
More negative voltage
- D.
Lower voltage level
Correct Answer
D. Lower voltage levelExplanation
In negative logic, the logic state 1 corresponds to a lower voltage level. This means that when the logic state is 1, the voltage is lower compared to when the logic state is 0. This is the opposite of positive logic, where the logic state 1 corresponds to a higher voltage level.Rate this question:
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- 3.
The output of a 2-input OR the gate is 0 only when it’s
- A.
Both inputs are 0
- B.
Either input is 1
- C.
Both inputs are 1
- D.
Either input is 0
Correct Answer
A. Both inputs are 0 -
- 4.
An AND gate
- A.
Implements logic addition
- B.
Is equivalent to a series switching circuit
- C.
Is an any-or-all gate
- D.
Is equivalent to a parallel switching circuit
Correct Answer
B. Is equivalent to a series switching circuit -
- 5.
The only function of a NOT gate is to
- A.
Stop a signal
- B.
Recomplement a signal
- C.
Invert an input signal
- D.
Act as a universal set
Correct Answer
C. Invert an input signalExplanation
A NOT gate is a basic logic gate that has only one input and one output. Its main function is to invert or negate the input signal. In other words, if the input signal is high or true, the output will be low or false, and vice versa. The NOT gate does not stop or recomplement a signal, nor does it act as a universal set. Its primary purpose is to invert the input signal.Rate this question:
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- 6.
What will be the decimal equivalent of (111011.10)2
- A.
48.625
- B.
59.487
- C.
48.487
- D.
59.625
Correct Answer
D. 59.625 -
- 7.
The decimal equivalent of sum of two binary numbers is (1010101)2 and (1001010)2
- A.
300
- B.
200
- C.
326
- D.
226
Correct Answer
C. 326 -
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Current Version
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Mar 21, 2023Quiz Edited by
ProProfs Editorial Team -
Feb 17, 2009Quiz Created by
Alexeialeesh
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