Name of the University : University of Pune
Name of the College : MIT Arts Commerce & Science College
Degree : B.SC
Department : Computer Science
Subject Code/Name : Fundamentals of digital electronics
Year : I
Document Type : Question Bank
Website : mitacsc.ac.in
Download Model/Sample Question Paper : https://www.pdfquestion.in/uploads/mitacsc.ac.in/3799.-FDE.pdf
Fundamentals of Digital Electronics :
UNIT – I :
Data Representation and Arithmetic for Computers :
Q. 1. Convert the following decimal number into :
Related : MIT Arts Commerce & Science College Statistical Methods I and II B.SC Question Bank : www.pdfquestion.in/3795.html
Q. 2. Convert the decimal number (128)10 into binary, octal,
Q. 3. Convert decimal number 125.85 into its binary equivalent
Q. 4. What is the decimal equivalent of binary number 10110.010 –
Q. 5. In two’s complement method of subtraction, what indicates –
Q. 6. convert the following octal numbers into binary equivalent –
Q. 7. Convert the given decimal number into binary number :
Q. 8. Describe Hexadecimal and octal number system in detail
Q. 9. Convert 2479 to hexadecimal.
Q. 10. Perform the following subtraction using 2’s complement method,
Q. 11. Give the radix or base of the following number systems :
Q. 12. convert the following numbers :
Q. 13. Convert the following numbers
Q. 14. Solve using 2’s complement method :2. (1100)2 – (1111)2
Q.15. Construct the Hamming code for the data 11110011.
Q. 16. Construct a BCD and Excess 3 code for decimal number 0
Q. 17. Convert the decimal number (128)10 into binary,
Q. 18. A receiver received the following Hamming code
Q. 19. Construct the BCD and Gray code for decimal number 0
Q. 20. 1101 is not a BCD number. justify.
Q. 21. Write a short note on weighted and unweighted codes
Q. 22. Gray code is not used for performing arithmetic operations ,
Q. 23. Convert binary 1001 to its gray equivalent and gray 0110
Q. 24. Construct Hamming code for data 110010111 with even parity.
Q. 25.Convert the following binary numbers into gray code.i. 01011
Q. 26. Describe the BCD CODE and ASCII code
Q. 27. A receiver receives the Hamming code 101101010
Q. 28. What is ASCII code- Where is it used –
Q. 29. Write a short note on Gray code.
Q.30. Explain the weighted and nonweighted codes with suitable examples.
Q.31. Construct Hamming code for data 11110011 with even parity .
Q. 32. What is ASCII code – Where it is used-
Q. 33. What do you mean by Weighted code and Non-weighted code –
Q. 34. Why is it necessary to use Hamming code- Generate hamming –
Q. 35. What is the difference between BCD and Binary Code –
UNIT 2 :
Logic Gates :
Q.1. Build NAND, EXOR gates using only NOR gates .
Q.2. Simplify the following equation using k-map
Q. 3. Compare the TT L and MOS logic families
Q.5. Build OR and EXOR gates using only NAND gates
Q.6. Write short note on k map
Q.7. Draw the circuit diagram of 2 input NAND gate using
Q.9. State and prove De Morgan’s theorems.
UNIT 3 : Combinational Circuits
Q.1. Explain working of full adder circuit with its logic diagram and truth table .
Q.2. With the neat logic diagram explain the working of 4 bit parallel adder.
Q.3. Explain the working of full adder circuit with its logic diagram & truth table.
Q.4. Draw the diagram of a 4 bit adder subtractor and explain its working.
Q.5. Draw the diagram of 4 bit universal adder subtractor and explain its working.
Q.6. Explain with a neat diagram working of a 4 –bit universal adder- subtractor circuit.
Q.7. Draw the circuit diagram of full adder and explain it with the help of truth table .
Q.8. With the help of suitable table diagram explain the working of 8-bit parallel adder/ subtractor .
Q. 9. Describe half adder with the help of the logic diagram and truth table.
Q.10. With the help of suitable diagram explain the working of 8-bit parallel adder / subtractor .
Q.11. With suitable logic diagram , explain half subtractor and give its truth table.
Q.12. Explain 4-bit binary adder/subtractor .
Q.13 . What is multiplexer ? Draw circuit diagram of 8 : 1 multiplexer. explain its working in brief.
Q.14. write short note on IC 74148.
Q.15. Explain decoder 7447 with its truth table and write downthe function of each pin.
Q.16. what is multiplexer ? Draw the circuit for a 2 : 1 nibble multiplexer and explain in brief its working
Q.17. Explain action of demultiplexer with IC 74154. What is difference between demultiplexer and decoder ?
Q.18. With neat logic diagram explain the working of an Octal to binary Encoder.
Q.19. Explain BCD to seven segment decoder driver.
Q.20. Write functions of the following ICs : 7447, 74138, 74150, 74154.
Q. 21. What is a nibble multiplexer ?
Q.22. What is multiplexer ? Explain function of a 4 : 1 multiplexer with logic diagram.
Q.23. explain decoder IC 7447with its truth table and write functions of its pins.
Q.24. IC 7447is____________
Q.25. what is demultiplexer ? Explain working of a 1:4 demultiplexer with logic diagram.
Q.26 Explain the working of an octal to binary encoder. What is a priority encoder ?
Q.27. Write a short note on 7 segment display. Mention the two ICs used for driving 7 segment displays using a BCD input.
Q.28. Identify the function of the following IC’s :
i. IC 74150
ii. IC74148
Q.29. What is multiplexer ? Draw a circuit diagram of 4:1 multiplexer and explain