PTU M.Tech 1st Semester Last 10 Years 2010-2020 Previous Question Papers|| Punjab Technical University
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| Roll No. | Total No. of Questions : 08 | Total No. of Pages : 02 |
| Time: 3 Hrs. |
M.Tech.(ECE) (Sem.-1)
ELECTRONICS SYSTEM DESIGN
Subject Code: EC-502
M.Code: 36203
INSTRUCTION TO CANDIDATES :
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- Attempt any FIVE questions out of EIGHT questions.
- Each question carries TWENTY marks.
Max. Marks : 100
- a) Implement the function f= Sm(0, 2, 3, 6, 7, 11) + ¢ (1, 4, 8, 15) by using Q-M method. (10)
b) Using the theorems minimize the following expression (10) - a) Design and implement half and full subtractor using NOR gates. (12)
b) Explain ROM and PLA. What is the difference between ROM and PLA? (8) - a) Why shift registers are required? Discuss the various operation modes of shift registers. (10)
b) List the design steps for next state decoders. (10) - Design a circuit that will compare two 2-bit numbers. Implement the circuit using only NOR gates and then again repeat using only NAND gates? (20)
- a) What is a binary cell? Design a binary cell mentioning all appropriate design steps. (10)
b) Define propagation delay? What is its significance? Also make a comparison between open collector and tri-state bus systems. (10) - Implement the function f = Sm (0, 4, 6, 7, 9, 12, 14) using ROM, PLA and 4 : 1 multiplexer. (20)
- a) Explain the purpose of grounding and shielding in digital systems. (8)
b) What is tri-state logic circuit and how does it help building a tri-state bus system? Discuss the advantages of this logic in reducing hardware in system implementation. (12) - Write short note on following :
a) PAL
b) Hazards
c) Wired Logic (20)
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