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VLSI Interview Questions
Questions Answers Views Company eMail

While using logic design, explain the various steps that r followed to obtain the desirable design in a well defined manner?

Intel,

1 6077

Why is OOPS called OOPS? (C++)

ARM, Intel,

1 4711

What is a linked list? Explain the 2 fields in a linked list?

Intel,

1 7288

Implement a 2 I/P and gate using Tran gates?

Intel,

3507

Insights of a 4bit adder/Sub Circuit?

Intel,

2841

For f = AB+CD if B is S-a-1, what r the test vectors needed to detect the fault?

Intel,

5 12196

Explain various adders and diff between them?

Intel,

1 4753

Explain the working of 4-bit Up/down Counter?

Intel,

3981

A circuit has 1 input X and 2 outputs A and B. If X = HIGH for 4 clock ticks, A = 1. If X = LOW for 4 clock ticks, B = 1. Draw a state diagram for this Spec?

Intel,

3 8581

Advantages and disadvantages of Mealy and Moore?

Intel,

2 39023

Id vs. Vds Characteristics of NMOS and PMOS transistors?

Brillient, Intel, ISRO,

1 15984

Explain the operation of a 6T-SRAM cell?

Intel,

4063

Differences between DRAM and SRAM?

Infosys, Intel, University, Wipro,

14 68150

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

Intel,

3225

Given a circuit and asked to tell the output voltages of that circuit?

Intel, Omega Healthcare,

1 3814

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Un-Answered Questions { VLSI }

Draw the stick diagram of a NOR gate. Optimize it

752

Draw a CMOS Inverter. Explain its transfer characteristics

667

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

843

Write a program to explain the comparator?

673

What work have you done on full chip Clock and Power distribution? What process technology and budgets were used?

2736




what is a sequential circuit?

600

What is the difference between nmos and pmos technologies?

644

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

1734

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

2004

What products have you designed which have entered high volume production?

1958

What are the steps involved in preventing the metastability?

648

What is the critical path in a SRAM?

2612

What is the purpose of having depletion mode device?

613

Give a big picture of the entire SRAM Layout showing your placements of SRAM Cells, Row Decoders, Column Decoders, Read Circuit, Write Circuit and Buffers

630

For a NMOS transistor acting as a pass transistor, say the gate is connected to VDD, give the output for a square pulse input going from 0 to VDD

938

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