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Digital-electronics Questions Set 45:

Quiz Mode

How many 2:1 multiplexers are required to implement a 16:1 multiplexer?

Solution:

How many storage locations are available when a memory device has twelve address lines?

1024

4096

144

512

Solution:

The number of combinations for which the 3-bit input A is not equal to the 3-bit input B is

238

248

148

138

Solution:

Which of following flip-flop is called transparent flip flop ?

SR Flip Flop

JK Flip Flop

D Flip Flop

T Flip Flop

Solution:

How many 3-to-8 line decoders with an enable input are needed to construct a 6-to-64 line decoder without using any other logic gates?

Solution:

An OR gate can be imagined as

switches connected in series

switches connected in parallel

transistors connected in series

transistors connected in parallel

Solution:

For the binary number A[15:0] = 0110110010001111, the value of A[14:13] is ______ the value of A[3:2].

Less than

Greater than

the same as

cannot be determined

Solution:

Which law/theorem is associated with the statement: "NAND gate is equivalent to a bubbled OR gate"?

Involution law

De Morgan's theorem

Redundancy theorem

Associative law

Solution:

The expression for carry in the half adder is _____.

A'.B

A.B

A+B

A' + B'

Solution:

At high frequencies when the sampling interval is too long in a frequency counter, which one of the following is true?

The counter works fine

The counter undercounts the frequency

The measurement is less precise

The counter overflows

Digital-electronics Questions Set 45:

How many 2:1 multiplexers are required to implement a 16:1 multiplexer?

Solution:

How many storage locations are available when a memory device has twelve address lines?

Solution:

The number of combinations for which the 3-bit input A is not equal to the 3-bit input B is

Solution:

Which of following flip-flop is called transparent flip flop ?

Solution:

How many 3-to-8 line decoders with an enable input are needed to construct a 6-to-64 line decoder without using any other logic gates?

Solution:

An OR gate can be imagined as

Solution:

For the binary number A[15:0] = 0110110010001111, the value of A[14:13] is ______ the value of A[3:2].

Solution:

Which law/theorem is associated with the statement: "NAND gate is equivalent to a bubbled OR gate"?

Solution:

The expression for carry in the half adder is _____.

Solution:

At high frequencies when the sampling interval is too long in a frequency counter, which one of the following is true?

Solution:

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