VLSI Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

VLSI Interview Questions

Questions Answers Views Company eMail

Mention what are the different gates where Boolean logic are applicable?

1134

what is a sequential circuit?

1175

what is the use of defpararm?

1154

Explain how binary number can give a signal or convert into a digital signal?

1129

why is the number of gate inputs to CMOS gates usually limited to four?

1348

what are three regions of operation of MOSFET and how are they used?

1244

what is SCR (Silicon Controlled Rectifier)?

1048

Explain why present VLSI circuits use MOSFETs instead of BJTs?

1156

what is multiplexer?

1170

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

1222

Explain how Verilog is different to normal programming language?

1285

Explain what is Verilog?

1118

what is Slack?

1196

Mention what are the two types of procedural blocks in Verilog?

1308

Explain how logical gates are controlled by Boolean logic?

1197

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Un-Answered Questions { VLSI }

Explain what is scr (silicon controlled rectifier)?

1065

Explain the operation of a 6T-SRAM cell?

4516

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

3801

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

1259

Given a layout, draw its transistor level circuit. (I was given a 3 input AND gate and a 2 input Multiplexer. You can expect any simple 2 or 3 input gates)

1204

Why does the present vlsi circuits use mosfets instead of bjts?

1308

What's the price in 1K quantity?

2828

Basic Stuff related to Perl?

2828

Explain sizing of the inverter?

4433

What is the difference between nmos and pmos technologies?

1116

Explain the Various steps in Synthesis?

3283

How can you construct both PMOS and NMOS on a single substrate?

4987

What are the different design constraints occur in the synthesis phase?

1102

Explain the three regions of operation of a mosfet.

1098

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

4014

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