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Digital-electronics Questions Set 77:

Quiz Mode

What is another name for the reflected binary code?

BCD code

Binary code

Gray code

ASCII code

Solution:

What is the sum output of a half adder when A and B are the inputs?

A AND B

A OR B

A XOR B

A EX-NOR B

Solution:

An unconnected TTL (Transistor-Transistor Logic) input acts as a HIGH, not a LOW.

True

False

Not given

Null

Solution:

An ADC with a span of 1 to 4V. If it can encode 8 levels, what is its signal-to-noise ratio?

2.5

3.14

2.25

3.01

Solution:

Which type of counter has the highest speed?

Ring counter

Ripple counter

Synchronous counter

Asynchronous counter

Solution:

The flip-flop used in a CPLD macrocell can be programmed as a

J-K flip-flop

D flip-flop

both (a) and (b)

neither (a) nor (b)

Solution:

A digital circuit that compares the magnitudes of two quantities and produces an output indicating the relationship of the quantities is called_____.

Solution:

Which of the following expressions represents the commutative law of multiplication?

A + B = B + A

A • B = B + A

A • (B • C) = (A • B) • C

A • B = B • A

Solution:

Which of the following statements is incorrect?

( A XOR B )' = A XNOR B

A XOR B XOR C = A XNOR B XNOR C

A XOR 1 = A

( A XOR B XOR C XOR D)' = A XNOR B XNOR C XNOR D

Solution:

What is the main difference between latches and flip-flops?

Both are the same

Flip-flops have an extra output

Latches have 1 input but flip-flops have 2

Latches have 2 inputs but flip-flops have 1

Digital-electronics Questions Set 77:

What is another name for the reflected binary code?

Solution:

What is the sum output of a half adder when A and B are the inputs?

Solution:

An unconnected TTL (Transistor-Transistor Logic) input acts as a HIGH, not a LOW.

Solution:

An ADC with a span of 1 to 4V. If it can encode 8 levels, what is its signal-to-noise ratio?

Solution:

Which type of counter has the highest speed?

Solution:

The flip-flop used in a CPLD macrocell can be programmed as a

Solution:

A digital circuit that compares the magnitudes of two quantities and produces an output indicating the relationship of the quantities is called_____.

Solution:

Which of the following expressions represents the commutative law of multiplication?

Solution:

Which of the following statements is incorrect?

Solution:

What is the main difference between latches and flip-flops?

Solution:

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