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Digital-electronics Questions Set 117:

Quiz Mode

How many AND gates are required for a 1-to-8 demultiplexer?

Solution:

The following hexadecimal number (1E.43)16 is equivalent to

(36.506)₈

(36.206)₈

(35.506)₈

(35.206)₈

Solution:

Find the sum of product representation of F(x,y,z) = x' + yz(x + z)

∑m(1,3,4,6,7)

∑m(0,1,2,7)

∑m(0,1,3,4,6)

∑m(0,1,2,3,7)

Solution:

How many transistors are present in a typical SRAM (Static Random Access Memory) cell?

8 transistors

6 transistors

9 transistors

5 transistors

Solution:

Which of the following statements about latches is true?

Latches hold memory indefinitely

Latches hold one byte of memory

Latches lose memory when powered off

All of the above

Solution:

Which of the following expressions indicates the correct conversion of an SR flip-flop to a T flip-flop?

S = T Qn' R = Qn T

S = T' Qn' R = Qn' T'

S = T Qn R = Qn' T

S = T' Qn' R = Qn T'

Solution:

A student designs an up counter with Q2 as the most significant bit (MSB) and Q0 as the least significant bit (LSB). The counter uses three flip-flops and one AND gate. The student connects Q0 and Q2 as inputs to the AND gate, and the output of the AND gate is connected to the clear input of all the flip-flops. Which type of counter did the student design?

Mod-5 counter

Mod-4 counter

Mod-6 counter

Mod-3 counter

Solution:

A principle regarding most display decoders is that when the correct input is present, the related output will switch ____________

HIGH

To high impedance

To an open

LOW

Solution:

The set inputs are used in a decade counter, why?

To set the counter to 0011

To set the counter to 1000

To set the counter to 1001

To set the counter to 0001

Solution:

Product-of-Sums expressions can be implemented using ___________

2-level OR-AND logic circuits

2-level NOR logic circuits

2-level XOR logic circuits

Both 2-level OR-AND and NOR logic circuits

Digital-electronics Questions Set 117:

How many AND gates are required for a 1-to-8 demultiplexer?

Solution:

The following hexadecimal number (1E.43)16 is equivalent to

Solution:

Find the sum of product representation of F(x,y,z) = x' + yz(x + z)

Solution:

How many transistors are present in a typical SRAM (Static Random Access Memory) cell?

Solution:

Which of the following statements about latches is true?

Solution:

Which of the following expressions indicates the correct conversion of an SR flip-flop to a T flip-flop?

Solution:

Solution:

A principle regarding most display decoders is that when the correct input is present, the related output will switch ____________

Solution:

The set inputs are used in a decade counter, why?

Solution:

Product-of-Sums expressions can be implemented using ___________

Solution:

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