EC-604-A Microcontroller and Embedded System - Dec 2024 Question Paper

Under each question, How to answer lists the points an answer should cover, outlined by CampusPrep from the syllabus. Check the details against your textbook.

1. 7 Marks
   aWrite about the following terms :

   1. i)Baud Rate
   2. ii)SBUF Register
   3. iii)SCON Register
   How to answer

   • Define Baud Rate as serial data rate in bits/sec
   • Describe SBUF register as serial buffer for TX/RX in 8051
   • Describe SCON register bits and function for serial control
2. 7 Marks
   bDraw and explain the schematic of ADC interfacing with 8051.
   How to answer

   • Show 8051 ports connected to ADC0804/0808 data, control lines
   • Explain ALE, OE, EOC, START, clock connections
   • Explain interfacing program flow and conversion steps
3. 7 Marks
   aAssume the crystal frequency as 11.0592 MHz and generate a square wave of the frequency 1KHz at pin P2.3, use timer 0 in mode 1.
   How to answer

   • Calculate machine cycle and required timer delay for 1 kHz square wave
   • Calculate TH0/TL0 reload value for mode 1
   • Write 8051 assembly/C program toggling P2.3 with timer 0 delay
4. 7 Marks
   bWhat is the role of Rs. 232 in data transmission? What are the main signals used as handshaking signals?
   How to answer

   • Define RS-232 as serial communication standard and voltage levels
   • Explain role in data transmission between DTE-DCE
   • List handshaking signals: RTS, CTS, DTR, DSR, DCD, RI
5. 8 Marks
   aDraw and explain the functional block diagram of 8096 microcontroller.
   How to answer

   • Draw functional block diagram of 8096 with CPU, ROM, RAM, I/O, timers, ADC
   • Explain bus controller, serial port, PWM, HSI/HSO
   • Explain data flow between blocks
6. 6 Marks
   bWhat are the common features of 8096 microcontroller?
   How to answer

   • List 16-bit CPU, memory size, I/O ports
   • Mention timers, serial port, ADC, PWM features
   • Mention operating frequency and power modes
7. 7 Marks
   aWrite about the different addressing modes of 8096 microcontroller.
   How to answer

   • Define addressing mode concept
   • Explain direct, indirect, indexed, immediate modes in 8096
   • Give example for each mode
8. 7 Marks
   bWrite about the control and status register of 8096 microcontroller.
   How to answer

   • Identify control and status registers in 8096
   • Explain function of each bit/field
   • Explain role in CPU and peripheral control
9. 6 Marks
   aWhat is Embedded system? What are its common applications?
   How to answer

   • Define embedded system as dedicated microprocessor-based system
   • Explain characteristics of dedicated function
   • List common applications: automotive, consumer, industrial, medical
10. 8 Marks
    bDifferentiate between general computing system and embedded system.
    How to answer

    • Define general computing vs embedded system
    • Compare on purpose, hardware, OS, power, cost
    • Present differences in tabular form
11. 8 Marks
    aWrite about the characteristics and attributes of embedded system.
    How to answer

    • Define characteristics: real-time, reliability, low power, small size
    • Explain attributes: performance, cost, safety
    • Give examples illustrating attributes
12. 6 Marks
    bWhat is general purpose processor and application specific processor?
    How to answer

    • Define general purpose processor with examples
    • Define application specific processor (ASSP/ASIC)
    • Compare flexibility, performance and use cases
13. 7 Marks
    aDifferentiate between Von Neumann architecture and Harvard architecture.
    How to answer

    • Explain Von Neumann single memory for program and data
    • Explain Harvard separate program and data memory
    • Compare speed, complexity, applications in table
14. 7 Marks
    bCompare the RISC and CISC architecture.
    How to answer

    • Define RISC with simple fixed instructions
    • Define CISC with complex variable instructions
    • Compare on instruction set, cycles, power, applications
15. 7 Marks
    aWhat is Watchdog timer? How to utilize the concept of timer and counter?
    How to answer

    • Define watchdog timer as recovery timer for hang
    • Explain timer vs counter mode operation
    • Explain servicing/resetting watchdog in embedded program
16. 7 Marks
    bWhat is Interrupt? How microprocessor checks for the coming interrupt? What are different types of it?
    How to answer

    • Define interrupt and polling vs interrupt-driven I/O
    • Explain how microprocessor checks/senses interrupt and responds
    • List types: maskable/non-maskable, hardware/software, vectored