JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD
JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD B.Tech IV EMBEDDED SYSTEMS Previous Question Paper (May/June - 2019 - R15)
Part A is compulsory. Answer all questions in Part A. Part B consists of 5 Units. Answer any one full question from each unit.
PART - A
What is the purpose of using instruction register?
Answer
The Instruction Register (IR) holds the current instruction being executed by the processor. It enables the control unit to decode the instruction and generate the necessary control signals to perform the required operation.
Why do we need a powerful interrupt structure in microcontrollers?
Answer
A powerful interrupt structure is essential to allow the microcontroller to respond immediately to asynchronous external or internal events. It enables efficient multitasking, real-time processing, and power management by allowing the processor to remain in a low-power state until an event requires attention, eliminating the need for constant polling.
Define Mailbox and Pipe.
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What are the various shared data operating system services?
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What is the necessity of RTOS?
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Write software tools in designing of an embedded system.
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How TCMs are used to improve deterministic real-time response.
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Define the pipeline stages in a 5-stage pipeline of ARM processor.
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Write the specifications of ARM processor.
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Write three types of ARM load-store instructions.
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PART - B
With neat sketch, explain the architecture of 8051 microcontroller.
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How we create hardware delays by using Timer 0 and Timer 1. Explain with examples.
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Write about Interrupt Service Handling in RTOS.
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Explain state transition diagram of RTOS.
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Explain briefly the concept of counting semaphore and Mutex.
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Why are most designers use FOSS tools in embedded system development? Explain.
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Discuss various methods adopted to reduce power consumption in embedded applications.
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Explain different features of each ARM processor families.
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Explain any of two hardware extensions of ARM with neat diagrams.
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Draw and explain the format of ARM data processing instructions.
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Explain about ARM-Thumb Interworking with example.
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Explain Thumb software interrupt instructions with example.
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