Explore topic-wise MCQs in Boolean Algebra and Logic Simplification .

This section includes 8 Mcqs, each offering curated multiple-choice questions to sharpen your Boolean Algebra and Logic Simplification knowledge and support exam preparation. Choose a topic below to get started.

1.

The problem of the V OH(min) of a TTL IC being too low to drive a CMOS circuit and meet the CMOS requirement of V IH(min) is usually easily overcome by:

A. adding a fixed voltage-divider bias resistive network at the output of the TTL device
B. avoiding this condition and only using TTL to drive TTL
C. adding an external pull-down resistor to ground
D. adding an external pull-up resistor to V CC
Answer» E.
Discussion
2.

How is the speed–power product of a logic family determined?

A. The propagation delay in s is multiplied by the power dissipation in mW.
B. The propagation delay in ms is multiplied by the power dissipation in W.
C. The propagation delay in ns is multiplied by the power dissipation in mW.
D. The propagation delay in ns is multiplied by the power dissipation in W.
Answer» D. The propagation delay in ns is multiplied by the power dissipation in W.
Discussion
3.

Why are the maximum value of V OL and the minimum value of V OH used to determine the noise margin rather than the typical values for these parameters?

A. These are worst-case conditions.
B. These are normal conditions.
C. These are best-case conditions.
D. It doesn't matter what values are used.
Answer» B. These are normal conditions.
Discussion
4.

From the following specifications determine the fan-out for the logic family.

A. HIGH state is 16, LOW state is 8
B. HIGH state is 8, LOW state is 16
C. HIGH state is 4, LOW state is 8
D. HIGH state is 8, LOW state is 4
Answer» C. HIGH state is 4, LOW state is 8
Discussion
5.

The problem of interfacing IC logic families that have different supply voltages ( V CC 's) can be solved by using a:

A. level-shifter
B. tristate shifter
C. decoupling capacitor
D. pull-down resistor
Answer» B. tristate shifter
Discussion
6.

The rise time ( t r ) is the time it takes for a pulse to rise from its ________ point up to its ________ point. The fall time ( t f ) is the length of time it takes to fall from the ________ to the ________ point.

A. 10%, 90%, 90%, 10%
B. 90%, 10%, 10%, 90%
C. 20%, 80%, 80%, 20%
D. 10%, 70.7%, 70.7%, 10%
Answer» B. 90%, 10%, 10%, 90%
Discussion
7.

As a general rule, the lower the value of the speed–power product, the better the device because of its:

A. long propagation delay and high power consumption
B. long propagation delay and low power consumption
C. -
D. -
Answer» C. -
Discussion
8.

Assume that a particular IC has a supply voltage ( V cc ) equal to +5 V and I CCH = 10 mA and I CCL = 23 mA. What is the power dissipation for the chip?

A. 50 mW
B. 82.5 mW
C. 115 mW
D. 165 mW
Answer» C. 115 mW
Discussion