Dr. A.P.J. Abdul Kalam University BE VI SEM (EC) VLSI Circuits & Systems [EC605] June 2021 Question Paper

Dr. A.P.J. Abdul Kalam University

Bachelor of Engineering

Sixth Semester Examination, June-2021

VLSI Circuits & Systems [EC605]

Branch: EC

Time: 3:00 Hrs Max Marks 70

Note: 1. Attempt any five questions out of eight.

2. All question carry equal marks.

Q.1. (a) Explain ASM flow chart with help of a suitable example

(b) Explain the hardware implementation and algorithm for addition with

signed 2’s compliment data.

Q.2 (a) What is FPGA? Explain various types of FPGA with diagram.

(b) Implement a BCD to excess 3 code converters by using PLA.

Q.3 (a) Prove that p-MOS pass strong logic ‘1’ and n-MOS pass strong logic ‘0’.

(b) Explain hazards in sequential circuits. Explain methods of removal of

hazards in sequential circuit design.

Q.4 (a) Explain VLSI design flow and design strategies.

(b) Write a short note on computer aided design (CAD) tools

Q.5 (a) What is controller? Describe the autonomous and non-autonomous

controller with help of diagram.

(b) Draw and explain ASM chart for a comparator.

Q.6 (a) What are faults? Explain its type.

(b) Explain the state minimization of completely specified machine by using

tabular methods

Q.7 (a) Explain secondary state assignment in sequential machines.

 (b) Describe in brief critical and non-critical races.

Q.8 Explain the following memory elements:-

D flip-flop

J-K flip-flop

S-R flip-flop

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