R05321901-embedded-and-real-time-systems

Set No. 1

Code No: R05321901

III B.Tech Supplimentary Examinations, Aug/Sep 2008 EMBEDDED AND REAL TIME SYSTEMS (Electronics & Computer Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆⋆⋆⋆⋆ 1. Explain the following with diagram and truth table. (a) (b) (c) (d) (e) (f) (g) (h)

[2 × 8]

2 input NOR gate 2 input NAND gate Inverter nMOS transistor pMOS transistor 2-4 line Decoder 2 input Exclusive - OR 2 input Exclusive - NOR.

2. (a) What is an interrupt? Why they are required in a computer? Explain clearly how multiple interrupts are handled by the computer. (b) Explain various design considerations that are common to broad range of Embedded Systems. [8+8] 3. (a) Explain about Synchronization among Processes. (b) Explain about Process Suspend, Resume and Join. 4. (a) Explain about Ethernet and its signals. (b) Explain about the infrared communication.

[10+6] [8+8]

5. What are the Kernal services in any operating system. Briefly explain any three such services. [16] 6. With suitable examples explain how to : (a) Set an event flag (b) Clear an event flag (c) Query an event flag.

[5+5+6]

7. (a) Explain about the issues involved in synchronization of data between the handheld computers and desktop computers. (b) Explore the standardization activities for data synchronization. [8+8] 8. Explain with an example how an embedded controller modeled by an FSM is Converted to gates. [16] ⋆⋆⋆⋆⋆ 1 of 1

Set No. 2

Code No: R05321901

III B.Tech Supplimentary Examinations, Aug/Sep 2008 EMBEDDED AND REAL TIME SYSTEMS (Electronics & Computer Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆⋆⋆⋆⋆ 1. (a) What is an Embedded System? Why it is so hard to define? (b) Explain about any application specific processor. (c) Explain about any single purpose processor hardware.

[8+4+4]

2. Explain about various Input/ Output (I/O) Devices used in Embedded Systems. [16] 3. (a) Explain briefly about Synchronization among Processes. (b) Write a note on Scheduling Processes.

[8+8]

4. (a) What are Bluetooth devices? Explain how they can be used to setup Personnel Area Networks ? (b) Where is IEEE 1394 interface used? Explain the protocol architecture of IEEE 1394? Differentiate between IEEE 1394A and IEEE 1394B. [6+10] 5. With suitable examples explain how do you: (a) Enable the interrupt (b) Disable the interrupt (c) Set the variable (d) Access the stored resource.

[5+6+5]

6. (a) Explain how inter-task synchronization can be done through Mailbox. (b) With suitable examples explain how to i. Create Mailbox ii. Delete a Mailbox.

[8+8]

7. (a) Explain the difference between pre-emptive and non-pre-emptive operating systems. (b) What are the objects of Operating System Kernel.

[8+8]

8. (a) List and Describe the key issues in designing an embedded system. (b) Describe the issues in performance modeling of an embedded system. ⋆⋆⋆⋆⋆

1 of 1

[8+8]

Set No. 3

Code No: R05321901

III B.Tech Supplimentary Examinations, Aug/Sep 2008 EMBEDDED AND REAL TIME SYSTEMS (Electronics & Computer Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆⋆⋆⋆⋆ 1. Explain the important features of any two Embedded Systems belong to each of the following areas of application. [4+4+4+4] (a) Consumer Electronics (b) Missiles and Bombs in Military (c) Data communication (d) Wireless Communication 2. Explain the features of a DSP processor. Give reasons why DSP processors are superior to general purpose microprocessor in DSP applications. [16] 3. (a) Define the following terms : finite - state machines, concurrent processes, real - time systems and real-time operating systems. (b) Explain about Synchronization among Processes.

[8+8]

4. (a) Explain about USB. (b) Explain briefly about RS232 and UART.

[8+8]

5. With suitable examples explain how do you: (a) Enable the interrupt (b) Disable the interrupt (c) Set the variable (d) Access the stored resource.

[5+6+5]

6. (a) Explain the need for event Register in Embedded RTOS. (b) Explain the procedure to create and delete an event Register.

[8+8]

7. List the various Mobile/ Handheld embedded operating systems and explain their features. [16] 8. List and describe the following hardware implementation tools in Embedded system (a) ICE (b) ROM Emulation (c) Logic Analyzer

[5+5+6] ⋆⋆⋆⋆⋆ 1 of 1

Set No. 4

Code No: R05321901

III B.Tech Supplimentary Examinations, Aug/Sep 2008 EMBEDDED AND REAL TIME SYSTEMS (Electronics & Computer Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆⋆⋆⋆⋆ 1. Design a Soda Machine controller given that a soda costs 75 cents and your machine accepts quarters only. Draw a black - box view, come up with a state diagram and state table, minimize the logic and then draw the final circuit. [16 ] 2. (a) Explain briefly how to test and debug an Embedded System. (b) Compare two different vendor microprocessors of your choice and explain all aspects related to them with neat diagram? [8+8] 3. (a) Describe a system as a State Machine, in particular as an FSMD. (b) Compare State Machine and Sequential Program Models.

[8+8]

4. Explain about Ethernet LAN Protocol Architecture and give brief description about each protocol. [16] 5. What are the Kernal services in any operating system. Briefly explain any three such services. [16] 6. (a) Explain how inter-task synchronization can be done through Mailbox. (b) With suitable examples explain how to i. Create Mailbox ii. Delete a Mailbox.

[8+8]

7. (a) Explain about the issues involved in synchronization of data between the handheld computers and desktop computers. (b) Explore the standardization activities for data synchronization. 8. Explain the impact of complexity of the logic on logic synthesis. ⋆⋆⋆⋆⋆

1 of 1

[8+8] [16]