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Digital-electronics Questions Set 123:

Quiz Mode

Perform binary addition: 101101 + 011011 = ?

011010

1010100

101110

1001000

Solution:

How many Flip Flops will be required to make a Ring counter that counts 8 states.

Solution:

Which of the following is the Consensus property?

(X+Y).(X+Z) = X+Y.Z

X.X.X. … .X = X

X.Y + X′.Z + Y.Z = X⋅Y + X′⋅Z

X.Y + X′.Z = X⋅(Y+Z)

Solution:

The output Y of a 2-bit comparator is logic 1 whenever the 2-bit input A is equal to 2-bit input B. The number of combinations for which the output is logic 1 is:

Solution:

What is the voltage associated with the Least Significant Bit (LSB) of a 10-bit Digital-to-Analog Converter (DAC) when the reference voltage is 10V?

9.76mV

10mV

21.45mV

4.88mV

Solution:

Which of the following is not a characteristic of EPROM?

Supports selective erasing

Needs exposure to UV Light

PROM needs to be removed for erasing

Typically takes 10-15 minutes to erase

Solution:

The data present on the bus is 11011100. The bus uses Shift Invert Coding technique for encoding the data bits. The incoming data bits are 00110011. Find the encoded version of the incoming bits.

00110011

10011001

01100110

11001100

Solution:

which condition is not used in setting a flip flop's initial condition?

PRE = 1 , CLR = 0

PRE = 0 , CLR = 1

PRE = 1 , CLR = 1

PRE = 0 , CLR = 0

Solution:

A 7-segment LED display with common anode requires

Negative supply voltage for the anode and BCD-to-7 segment decoder with active low outputs

BCD-to-7 segment decoder with active high outputs

Positive supply voltage for the anode and BCD-to-7 segment decoder with active low outputs

BCD-to-7 segment decoder with active low outputs

Solution:

Which of the following statements about universal logic gates is true?

OR and NOT gates are necessary and sufficient for realization of any logic function

AND and NOT gates are necessary and sufficient for realization of any logic function

NAND gates are not sufficient to realize any logic function

NOR gates are sufficient to realize any logic function

Digital-electronics Questions Set 123:

Perform binary addition: 101101 + 011011 = ?

Solution:

How many Flip Flops will be required to make a Ring counter that counts 8 states.

Solution:

Which of the following is the Consensus property?

Solution:

The output Y of a 2-bit comparator is logic 1 whenever the 2-bit input A is equal to 2-bit input B. The number of combinations for which the output is logic 1 is:

Solution:

What is the voltage associated with the Least Significant Bit (LSB) of a 10-bit Digital-to-Analog Converter (DAC) when the reference voltage is 10V?

Solution:

Which of the following is not a characteristic of EPROM?

Solution:

The data present on the bus is 11011100. The bus uses Shift Invert Coding technique for encoding the data bits. The incoming data bits are 00110011. Find the encoded version of the incoming bits.

Solution:

which condition is not used in setting a flip flop's initial condition?

Solution:

A 7-segment LED display with common anode requires

Solution:

Which of the following statements about universal logic gates is true?

Solution:

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