Digital electronics miscellaneous
- With which decoder it is possible to obtain many code conversions?
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By using 4 line to 16 line decoder it is possible to obtain many code conversion
Correct Option: D
By using 4 line to 16 line decoder it is possible to obtain many code conversion
- Which of the following circuits come under the class of combinational logic circuits:
1. Full adder
2. Full subtractor
3. Half adder
4. J-K flip-flop
5. Counter
Select the correct answer from the codes given below—
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Combinational logic circuit are:
● Full adder
● Full subtractor
● Half adderCorrect Option: D
Combinational logic circuit are:
● Full adder
● Full subtractor
● Half adder
- A digital multiplexer can be used for which of the following?
1. Parallel to serial conversion
2. Many to one switch
3. To generate memory chip select
4. For code conversion
Select the correct answer using the code given below–
-
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A digital multiplexer can be used for
● Parallel to serial conversion
● Many to one switchCorrect Option: C
A digital multiplexer can be used for
● Parallel to serial conversion
● Many to one switch
- Consider the following circuit which one of the following gives the function implemented by the MUX based digital circuit?
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The given circuit
From figure
F = C2 C1.1 + C2C1( A + B) + C2 C1S + C2 C1.0
or
F = C2 C1 + C2 C1S + C2C1 A B
Correct Option: D
The given circuit
From figure
F = C2 C1.1 + C2C1( A + B) + C2 C1S + C2 C1.0
or
F = C2 C1 + C2 C1S + C2C1 A B
- It is required to construct a 2n to 1 multiplexer by using 2 to 1 multiplexers only. How many of 2 to 1 multiplexers are needed?
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To construct a 2n to 1 multiplexer by using 2 to 1 multiplexer, the number of 2 to 1 multiplex required are 2n– 1. For example, n = 3 means we have to construct 8 to 1 multiplexer. So we need 2n – 1 = 7, 2 to 1 multiplexer.
Correct Option: A
To construct a 2n to 1 multiplexer by using 2 to 1 multiplexer, the number of 2 to 1 multiplex required are 2n– 1. For example, n = 3 means we have to construct 8 to 1 multiplexer. So we need 2n – 1 = 7, 2 to 1 multiplexer.
