Annamalai University 2009 B.E Electronics and Instrumentation Engineering Electronics & instrumentation - Question Paper
Register Number :
Name of the Candidate :
6 6 8 5 B E, DEGREE EXAMINATION, 2003
( FOURTH SEMESTER )
( ELECTRONICS & INSTRUMENTATION ) EIEC - 403 . DIGITAL ELECTRONICS
May ] [ Time : 3 Hours
Maximum : 60 Marks UNIT - I
1. (a) Convert all 4-bit binary code into 4-bit
gray code.
(b) Convert the following numbers to decimal :
(i) 69DFI6
(ii) eabci6
(OR)
2. (a) Explain the construction of Hamming
code.
(b) Implement the following ]0 j function using minimal number 0f logic gates,
Y = AB + BA + AC UNIT - II
3. (a) Compare ECL, MOS and TTL logic
family of lCs.
(b) Mention the different types of 1C packages available and compare them in terms of reliability.
(OR)
4, (a) Draw and explain the diagram and
principle of operation of a 3 input K NOR gate.
(b) Discuss any two characteristics digital Integrated circuits.
(c) Differentiate Schottkey and ordinaf-Pn diode.
5. (a) Prve :
AC (ABD) + ABCD + ABC_= BC +
AD (B+C)
(b) Simplify the expression
Z = ABC + ABC + ABC.
(OR)
6. (a) Design a logic circuit with inputs P, Q
and R, so that output S is high whenever P is O or whenever Q = R = 1.
(b) With an example, explain how a 4 variable Karnaugh map can be constructed.
7 (a) D esign a decade counter, using D-ftip-flop.
(b) Give the truth table for JK-flip-flop.
(c) Is a flip-flop a buffer ? - Justify.
(OR)
8. (a) Explain the working of a 4-bit serial |
in parallel out shift register.
(b) Differentiate Synchronous and I Asynchronous circuits, i
(c) Draw the circuit diagram of I SR-flip-flop using NOR gate.
9. (a) Differentiate PAL and PLA witfi|
diagrams.
(b) Differentiate EPROM and EEPROM ill terms of their programming and J erasing features.
(c) Differentiate SRAM and DRAM.
(OR)
10. Implement a full adder circuit using ROM. | PLA, and PAL.
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Attachment: |
| Earning: Approval pending. |
