JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD
JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD B.Tech II DIGITAL LOGIC DESIGN AND COMPUTER ORGANIZATION Previous Question Paper (November/December - 2017 - R15)
Note: This question paper contains two parts A and B. Part A is compulsory which carries 25 marks. Answer all questions in Part A. Part B consists of 5 Units. Answer any one full question from each unit. Each question carries 10 marks and may have a, b, c as sub questions.
PART A
Convert following hexadecimal to decimal numbers: (i) F2816 (ii) BC216.
Answer
(i) F2816 = (15 × 162) + (2 × 161) + (8 × 160) = 3840 + 32 + 8 = 388010. (ii) BC216 = (11 × 162) + (12 × 161) + (2 × 160) = 2816 + 192 + 2 = 301010.
Draw the different bus structures.
Answer
Common bus structures include: 1. Single-bus structure, where all components (CPU, memory, I/O) share a common communication path. 2. Multiple-bus structure, which uses several buses to allow simultaneous data transfers and reduce congestion. 3. Crossbar switch, which provides direct paths between any two components for high-speed parallel access.
What is code converter?
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Explain the design procedure of combinational circuit.
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Write about IEEE 754 floating point format.
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Explain with simple example fixed point addition.
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Define: (i) Hit ratio (ii) Virtual memory.
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List out the characteristics of secondary storage.
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What is the need of Interface circuit?
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Write short note on DMA.
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PART B
Compare different Computer Generations.
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Write a short note on Gray codes, Excess-3 codes.
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Explain about multiprocessors and multi computers.
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Discuss about functional units of basic computer.
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What are universal gates? Realize AND, OR, NOT, XOR gates using universal gates.
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Draw and Explain about SR flip flops and D flip flops.
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Draw and explain about shift register in-detail.
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Draw the half adder circuit with equations.
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Discuss briefly the hardware implementation of Signed - Magnitude data.
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Explain the Basic Machine Instructions.
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Explain various instructions present in IA-32 Pentium processor.
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Discuss about Hardware Implementation of arithmetic and logic operations.
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Briefly explain about memory management requirements.
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Differentiate between hard wired and micro programmed control unit.
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Discuss about the concept of cache memory.
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Discuss the address translation in the case of virtual memory diagrammatically.
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Explain USB addressing and protocols.
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Explain the handshake control data transfer during input and output operation in asynchronous bus with timing diagram.
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Explain how interrupts are handled from multiple devices.
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Explain the SCSI bus standard.
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