Computer Knowledge

Digital Logic and Microprocessors

749 Questions

Digital logic and microprocessors form the core of computer science, covering logic gates, combinational and sequential circuits, and CPU architecture. These topics are crucial for computer knowledge sections in technical exams. Test your digital electronics basics here.

Logic gates and circuitsCombinational vs sequential circuitsMicroprocessor instructionsTruth tables and boolean functions

Digital Logic and Microprocessors Questions

Multiple choice

For the CNC part programming, match Group A with Group B:

     
Group A Group B
P : Circular interpolation, counter clock wise I : G02
Q : dwell II : G03
R : circular interpolation, clock wise III : G04
S : point to point countering IV : G00

  1. P - II, Q - III, R - I, S - IV

  2. P - I, Q - III, R - II, S - IV

  3. P - I, Q - IV, R - II, S - III

  4. P - II, Q - I, R - III, S - IV
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

G03 – Circular interpolation, counter clockwise G04 – Dwell G02 – Circular interpolation, clockwise G00 – Point to point countering So P - II, Q - III, R - I, S - IV

Multiple choice the operational amplifier (op-amp) electronics physics properties of an ideal op-amp

An input applied to either input terminal will result in _____.

  1. outputs from both output terminals, which have opposite polarities

  2. outputs from both output terminals, which have the same polarities

  3. a single output from one of the output terminals

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

In a differential amplifier configuration, an input applied to one terminal results in outputs at both terminals that are equal in magnitude but opposite in phase (polarity).

Multiple choice physics semiconductors integrated circuits & microprocessor integrated chips semiconductor devices

Choose the correct statements:

  1. It is easier to fabricate $10000$ AND gates using circuit components than on an integrated chip.
  2. It is easier to fabricate $10000$ AND gates on an integrated chip than fabricating them using circuit components.

  3. It is easier to fabricate a single AND gate using circuit components as compared to on an IC.

  4. It is easier to fabricate a single AND gate on an IC as compared to using circuit components.
Reveal answer Fill a bubble to check yourself
B,C Correct answer
Explanation

Integrated chips have advantage when being used to fabricate a number of components at the same time. However when single component is being fabricated, it is advisable to fabricate components using circuit components instead of an Integrated Circuit.

Multiple choice economics consumption and investment functions determinants of consumption function and savings function production, consumption, saving and economic units ex ante and ex post

Which of the following can have a negative value?

  1. APC

  2. MPC

  3. MPS

  4. APS
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

APS refers to Average Propensity to save which defines the amount of savings in every 1 rupee of income for all level of income which can never be more than one as savings can be negative in situations when consumption is more than the national income leading to dis-savings in the economy i.e. before the break even point when APS<0.

Multiple choice physics electronic devices boolean algebra digital electronics and logic gates logic gates

The Boolean expression $P+\overline { P } Q$, where $P$ and $Q$ are the inputs of the logic circuit, represents  

  1. AND gate

  2. NAND gate

  3. NOT gate

  4. OR gate
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Using Boolean algebra, the expression P + P_bar Q can be simplified using the distributive law. Since P + P_bar = 1, the expression simplifies to P + Q, which represents the logical OR operation. Therefore, the circuit is an OR gate.

Multiple choice physics communication system elements of a communication system elements of communication system electromagnetic waves and communication system

A digital signal

  1. is less reliable than analog signal

  2. is more reliable than analog signal

  3. is equally reliable as the analog signal

  4. Not at all reliable
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Noise is added to digital signal also but its easier to remove the noise and amplify the digital signals as compared to analog signals, because analog signals contain many frequencies.

Multiple choice physics electric current through conductors carbon resistance and colour codes for carbon resistance carbon resistors and their colour coding resistors

The________ indicates the multiplier telling you the power of ten to which the two significant digits in color coding of the resistor  must be multiplied (or how many zeros to add).

  1. 2nd band

  2. 3rd band

  3. 4th band

  4. last band
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The 3rd band indicates the multiplier telling the power of ten to which the two significant digits in color coding of the resistor must be multiplied.


Answer-(B)

Multiple choice maths mathematical reasoning special words/phrases duality mathematical logic

To perform product of maxterms Boolean function must be brought into

  1. and terms

  2. or terms

  3. not terms

  4. nand terms
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

For performing Product of Maxterms, it has to be brought into POS, i.e; Product of Sum form. For this, the Boolean Function must be brought into OR terms.