VLSI Design B.Tech Question Paper : vardhaman.org

College : Vardhaman College Of Engineering
Degree : B.Tech
Department : Electrical & Electronics Engineering
Semester : VI
Subject : VLSI Design
Document type : Question Paper
Website : vardhaman.org

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VLSI Design Question Paper :

Four Year B. Tech VI Semester Regular Examinations June – 2014
(Regulations: VCE-R11)
(Electrical and Electronics Engineering)
Date: 7 June, 2014
Time: 3 hours
Max Marks: 75
Answer ONE question from each Unit

Related : Vardhaman College Of Engineering Microwave Engineering B.Tech Question Paper : www.pdfquestion.in/6393.html

All parts of the question must be answered in one place only
Unit – I :
1. a) With the help of neat figure, explain the behavior of nMOS device under the influence of different terminal voltages. 7M
b) With the help of relevant equations, explain the second order effects in MOSFET. 8M
2. a) With the help of neat circuit and transfer characteristics curve, explain the different regions of operation of CMOS inverter. 7M
b) Draw the circuit diagram of differential inverter and explain its working. 8M

Unit – II :
3. a) With the help of neat figure, explain the Czochralski method for manufacturing silicon ingots. 8M
b) Explain a typical n-well CMOS process technique. 7M
4. a) With neat sketch, explain the steps involved in fabrication of a silicon gate n-MOS transistor. 8M
b) Write a note on twin tub CMOS process technology. 7M

Unit – III :
5. a) Derive the equations for Rise time of CMOS inverter with equivalent circuits. 8M
b) Obtain the circuit diagram and stick diagram for CMOS inverter. 7M
6. a) Derive the equations for Fall-Time of CMOS inverter. 8M
b) Write short notes on 2?m double metal, double poly CMOS rules. 7M

Unit – IV :
7. a) Draw the truth table, circuit diagram and layout of a CMOS two input NOR and NAND gate. 7M
b) Design a CMOS logic gate circuit that implements:
i. F ? a ? b.c ? d.e. f
ii. F ? a.b ? c 8M

8. a) Design a dynamic CMOS logic gate circuit that implements F ? A ? (B.C) ? D.E . Explain its operation and advantages of dynamic CMOS logic. 8M
b) Draw the circuit to implement two input XNOR gate using complementary pass transistor logic. 7M

Unit – V :
9. a) Explain Stuck-At Faults model in detail. 7M
b) Explain short-circuit and open-circuit faults models with examples. 8M
10. a) Write short notes on Built in self-test (BIST) technique, draw a neat block diagram. 9M
b) Write short notes on terms Observability and Controllability in testing. 6M

Embedded Systems :
(Common to Computer Science and Engineering & Information Technology)
Date: 27 May, 2014
Time: 3 hours
Max Marks: 75
Answer ONE question from each Unit
All Questions Carry Equal Marks
All parts of the question must be answered in one place only :
Unit – I :
1. a) What is an embedded system? Explain three main characteristics of embedded systems that distinguish such system from other computing systems? 7M
b) Explain why we use microprocessors? Give two ways to design a digital system. 8M

2. a) Explain what are the problems we need to consider while designing an embedded computing system? 10M
b) Illustrate the use of UML to model systems, with the help of Model Train Controller. 5M

Unit – II :
3. a) Explain the various addressing modes of microcontroller and explain each with example. 10M
b) Explain with diagram the Port-0 pin circuit. 5M

4. a) Explain the following instructions:
i) DEC 15H ii) INC @ R0 iii) DA A iv)ADDC A,#00H v) SETB 80H 10M
b) With the help of a block diagram, explain the operation of timer 0 in mode 1. 5M

Unit – III :
5. a) What is a Semaphore? List the functions related to Semaphore and Illustrate how Semaphore is used to solve the shared data problem with an example?7M
b) List the different ways to protect the shared data and What is an Event? Mention the three standard features of an Event? 8M

6. a) Compare and contrast on the pros and cons of the number of Tasks needed in embedded applications. 7M
b) Discuss the different ways of saving the code memory space while using an RTOS along with their advantages and drawbacks. 8M

Unit – IV :
7. a) Illustrate the different ways of getting the executable file into the target system. 8M
b) Explain how the Tool chain uses the different segments in Embedded software with an example. 7M
8. a) Discuss the goals of a typical testing process and Explain the basic method for testing the embedded software on the development host with the help of a neat figure showing the Test system.8M
b) What is an Oscilloscope? Explain the working, features and uses of Oscilloscopes with a neat sketch. 7M