JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD
JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD B.Tech II Year DIGITAL LOGIC DESIGN AND COMPUTER ORGANIZATION Previous Question Paper (February - 2024 - R13)
i) Question paper consists of Part A, Part B.
ii) Part A is compulsory, which carries 25 marks. In Part A, answer all questions.
iii) In Part B, Answer any one question from each unit. Each question carries 10 marks and may have a, b as sub questions.
Part A
Write the advantages of floating-point representation.
Answer
The primary advantages of floating-point representation are its ability to represent a significantly wider range of values, from extremely small to extremely large numbers, using a fixed number of bits, and its capacity to maintain a consistent level of relative precision across that entire range through the normalization of the significand.
Add (+90) and (-80) using 2′s complement.
Answer
To add (+90) and (-80) using 2's complement, we first represent the numbers in 8-bit binary format.
1. Represent +90 in binary: 01011010
2. Represent +80 in binary: 01010000
3. Find the 2's complement of +80 to represent -80:
- Invert the bits: 10101111
- Add 1: 10101111 + 1 = 10110000
4. Add the binary representations of +90 and -80:
The carry bit (1) is ignored in 8-bit 2's complement arithmetic, leaving 00001010, which equals +10 in decimal.
What is a comparator?
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What is a counter? Name the various counters.
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What is PROM?
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Define the instruction and write any two instruction.
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Write about memory hierarchy.
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How can use the microprogrammed Control in regular programs.
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What is Device Control?
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What is micro operation? Give examples.
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Part B
What is the specialty of unit-distance code? State where they are used.
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Convert the following to the corresponding bases: i) (343)5 = ( )6 ii) (7654)8 = ( )10
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With the help of a neat block diagram explain the working of a SR flip-flop.
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Draw and write truth tables of following logic gates: i) NOT ii) OR iii) AND iv) NOR v) NAND
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Discuss about combinational programmable logic devices in detail.
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With the help of a neat block diagram, explain the working of a SR flip-flop.
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Write the simplification rules of Karnaugh’s maps and simplify the Boolean function using 4 variable maps F(A,B,C,D) = Σ(0,1,2,4,5,7,11,15)
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Explain the design procedure for multiplexers and de-multiplexers and draw the logic diagram of a 4-to-1 line multiplexer with logic gates.
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Write the algorithms for floating point multiplication and floating point division.
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What is addressing mode? Write the various addressing modes with examples.
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Draw the block diagram of digital computer and explain each block in detail.
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Discuss in detail about the multiple-bus organization of data path inside a processor.
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What is cache memory? Explain in detail.
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What is a bus? Elaborate.
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Explain the working of direct memory access and write the applications of it.
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What is the Interrupt? Explain the different types of Interrupts in digital computer.
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