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VLSI Interview Questions
Questions Answers Views Company eMail

Insights of a Tri-State Inverter?

Intel,

3 5825

Basic Stuff related to Perl?

Intel,

1917

Have you studied buses? What types?

Intel,

5 12653

Have you studied pipelining? List the 5 stages of a 5 stage pipeline. Assuming 1 clock per stage, what is the latency of an instruction in a 5 stage machine? What is the throughput of this machine ?

Intel,

4 10545

How many bit combinations are there in a byte?

Intel,

6 8295

For a single computer processor computer system, what is the purpose of a processor cache and describe its operation?

Intel,

3 8675

Explain the operation considering a two processor computer system with a cache for each processor.

Intel,

1844

What are the main issues associated with multiprocessor caches and how might you solve them?

Intel,

1 8183

Explain the difference between write through and write back cache.

Intel,

2 16998

Are you familiar with the term MESI?

Intel,

1 9489

Are you familiar with the term snooping?

Intel,

1 8365

Describe a finite state machine that will detect three consecutive coin tosses (of one coin) that results in heads.

Intel,

1 13506

In what cases do you need to double clock a signal before presenting it to a synchronous state machine?

IBM, Intel, nvidia,

3 15738

You have a driver that drives a long signal & connects to an input device. At the input device there is either overshoot, undershoot or signal threshold violations, what can be done to correct this problem?

Intel,

4 12354

What are the total number of lines written by you in C/C++? What compiler was used?

Intel, Zensar,

1 3790


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Un-Answered Questions { VLSI }

Implement a function with both ratioes and domino logic and merits and demerits of each logic?

169


What are the steps required to solve setup and hold violations in vlsi?

175


In Verilog code what does “timescale 1 ns/ 1 ps” signifies?

178


Write a VLSI program that implements a toll booth controller?

3052


Describe the various effects of scaling?

3797






what is Slack?

179


If an/ap = 0.5, an/ap = 1, an/ap = 3, for 3 inverters draw the transfer characteristics?

1575


How logical gates are controlled by boolean logic?

151


Give the logic expression for an AOI gate. Draw its transistor level equivalent. Draw its stick diagram

171


Explain the Various steps in Synthesis?

2401


What are the different design techniques required to create a layout for digital circuits?

150


What are the different ways in which antenna violation can be prevented?

183


Process technology? What package was used and how did you model the package/system? What parasitic effects were considered?

1331


Draw Vds-Ids curve for a MOSFET. Now, show how this curve changes with increasing Vgs.

168


Explain what is Verilog?

167