JNTU Kakinada B-Tech 3-1 RT31044 I DIGITAL SYSTEM DESIGN and DIGITAL IC APPLICATIONS R13 April 2018 Question Paper

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Code No: RT31044
III B. Tech I Semester Supplementary Examinations, May – 2018
DIGITAL SYSTEM DESIGN & DIGITAL IC APPLICATIONS (Common to Electronics and Communication Engineering and Electronics and Instrumentation
Engineering)Time: 3 hours Max. Marks: 70
Note: 1. Question Paper consists of two parts (Part-A and Part-B)2. Answering the question in Part-A is compulsory
3. Answer any THREE Questions from Part-B
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PART ?A
1 a) What are the requirements of VHDL? [3M]
b) What are levels of Abstraction in VHDL? [4M]
c) What are the commercial ROM types? [4M]
d) Define Fan in and fan out. [4M]
e) What is a floating point encoder? Explain. [3M]
f) Discuss the steps involved in the analysis of sequential circuits? [4M]
PART -B
2 a) Explain brief history of VHDL? [5M]
b) Explain the packages and libraries of VHDL? [8M]
c) Explain about concurrent and sequential statements? [3M]
3 a) Explain about major Net list formats for design representation [8M]
b) Discuss about VHDL synthesis [8M]
4 a) Explain in detail about PROM with an example? [8M]
b) With the help of logic diagram explain the function of PAL with one example? [8M]
5 a) Explain the terms: (i) DC noise margin (ii) Fan-out with reference to TTL
gate?
[8M]
b) Briefly list out the differences between ECL, TTL and CMOS logic family? [8M]
6 a) Design a two bit comparator circuit and explain its operation? [3M]
b) Design a 32×1 multiplexer by sing 74×151 IC and explain its operation? [8M]
7 a) With a neat sketch explain the Universal shift rgister [8M]
b) Design MOD-16 synchronous counter using T- Flip-Flop? [8M]
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R13
SET – 1