VALLIAMMAI ENGINEERING COLLEGE

SRM Nagar, Kattankulathur – 603 203

DEPARTMENT

OF

COMPUTER APPLICATIONS

QUESTION BANK

III SEMESTER

MC7302-EMBEDDED SYSTEMS

Regulation – 2013

Academic Year 2017– 2018

UNIT 1- INTRODUCTION TO MICROPROCESSORS

Evolution of Microprocessors - 8-Bit Processor - 8085 Architecture – Register Organization-

Instruction Set – Timing Diagram- Addressing Modes – Interrupts- Interrupt Service

Routines-Assembly Language Programming Using 8085.

PART - A

S.No Questions BT

Level

Competence

1 Define machine cycle and instruction cycle. BTL1 Remember

2 Name the various flag bits available in 8085

microprocessor. BTL1 Remember

3 List various instructions that can be used to clear

accumulator in Intel 8085. BTL1 Remember

4 List all the interrupt signals of Intel 8085. BTL1 Remember

5 What is the need of ALE signal in Intel 8085? BTL1 Remember

6 What is the function of NOP instruction? BTL1 Remember

7 Give the significance of SIM and RIM instructions

available in Intel 8085. BTL2 Understand

8 Distinguish the following signals of 8085: RST 7.5,

READY. BTL2 Understand

9 Express the limitations of Intel 8085 microprocessor. BTL2 Understand

10 Distinguish between SHLD and SPHL instructions. BTL2 Understand

11 Classify instruction set of Intel 8085. BTL3 Apply

12 Draw the schematic of latching low-order address bus in

8085 microprocessor. BTL3 Apply

13 Mention the various addressing modes of Intel 8085. BTL3 Apply

14 Point out the power supply and clock frequency values of

Intel 8085. BTL4 Analyze

15 Differentiate between immediate and implied addressing

modes of 8085 microprocessor BTL4 Analyze

16 Point out examples for Opcode and Operand. BTL4 Analyze

17 Obtain the various registers of Intel 8085. BTL5 Evaluate

18 Check whether program counter and stack pointer are

registers of 16 bit. BTL5 Evaluate

19 Develop a program to compare two 8 bit numbers in 8085. BTL6 Create

20 Generalize the multiplexing process done in Intel 8085. BTL6 Create

PART B

1 (i)List the arithmetic instructions, Shift and Rotate

instructions and explain with examples. (7)

(ii)List the Data transfer and Branching Instructions and

explain with examples. (6)

BTL 1 Remember

2 (i) Describe in detail about the pin configuration of 8085

processor. (8)

(ii) Examine about memory interfacing techniques used in

8085 microprocessor. (5)

BTL 1 Remember

3 (i)Write in detail about instruction formats and instruction BTL 1 Remember

execution timing. (8)

(ii)List out the maskable and non-maskable interrupts

available in Intel 8085 microprocessor. (5)

4 (i) What do you mean by hand assembly? Explain with the

help of example. (5)

(ii) Describe the sequence of event that may occur during the

different T state in the opcode fetch machine cycle of 8085.

(8)

BTL 1 Remember

5 Discuss about the internal hardware architecture of 8085

microprocessor with neat diagram. (13) BTL 2 Understand

6 (i) Discuss the uses of addressing modes of Intel 8085

microprocessor. (5)

(ii) Mention the different types of the same with examples.

(8)

BTL 2 Understand

7 (i) Draw the timing diagram for instruction CALL

4322H.Assume relevant details. (7)

(ii) Distinguish the similarities and differences of CALL and

RETURN instruction with PUSH and POP instruction. (6)

BTL 2 Understand

8 (i) Draw the timing diagram for MVI A ,8 bit data and

explain. (8) (ii) Discuss about byte and string manipulation with example.

(5)

BTL 3 Apply

9 Determine about the instruction of 8085 classified based on

their functions and word length. (13) BTL 3 Apply

10 (i) Explain about assembler directives. (5)

(ii) Explain the bus structure of 8085 processor. (8) BTL 4 Analyze

11 (i) Explain various interrupts and externally initiated signals

of 8085 microprocessor in detail. (7)

(ii) Explain the demultiplexing of address and data bus and

generation of control signals for memory and I/O with

schematic diagram. (6)

BTL 4 Analyze

12 (i) Evaluate how the interrupts are serviced by the processor.

(8)

(ii) Express how an instruction is fetched and executed in an

8085 processor with a flow diagram. (5)

BTL 5 Evaluate

13 Write an 8085 ALP to find the smallest of numbers in array

of 10 elements along with flowchart. (13) BTL 6 Create

14 Write an assembly language program to add and subtract

two 8 bit numbers using 8085 instruction set. (13) BTL 6 Create

PART C

1 (i) Obtain the operations carried out when 8085 executes the

following instructions (a) MOV A, M (b) XCHG (c) DAD B

(d) DAA to multiply two 8-bit numbers. (8)

(ii) Explain about the loop structure with counting and

indexing in 8085 programming. (7)

BTL 5 Evaluate

2 (i)Examine and label the timing diagram of I/O write

machine cycle of 8085Microprocessor. (8) BTL 5 Evaluate

(ii) Draw and explain the timing diagram of STA 5000H

instruction of Intel 8085 Microprocessor. (7)

3 (i) Show how program counter, stack pointer and status flags

operate in the architecture of 8085 microprocessor. (8)

(ii) Discuss about the software delays implemented using

counters. (7)

BTL 6 Create

4 Write an 8085 program to count the number of even and odd

numbers in a given set of numbers. (15) BTL 6 Create

UNIT II- INTRODUCTION TO EMBEDDED SYSTEMS

Embedded Systems- Processor Embedded Into A System-Embedded Hardware And Software

Units-Applications-Design Process – Intel 8051 Architecture- Processor And Memory

Organization-Interrupts Of 8051 - Assembly Language Programming Using 8051.

PART - A

S.No Questions BT

Level

Competence

1 What are the main components of an embedded system? BTL 1 Remember

2 What are the different types of memory used in embedded

system design? BTL 1 Remember

3 What role does a linker play? BTL 1 Remember

4 List the features of Intel 8051microcontroller. BTL 1 Remember

5 What is the use of PCON register? BTL 1 Remember

6 List the addressing modes of Intel 8051microcontroller. BTL 1 Remember

7 Give few examples for small scale embedded systems. BTL 2 Understand

8 Differentiate between editor and compiler. BTL 2 Understand

9 How embedded systems are different from conventional

PC? BTL 2 Understand

10 Give the format of PSW register of Intel 8051

microcontroller. BTL 2 Understand

11 Illustrate the need for watchdog timer. BTL 3 Apply

12 Why should be the embedded RTOS system to be

scalable? BTL 3 Apply

13 Classify the register banks in 8051 microcontroller. BTL 3 Apply

14 Differentiate RRA and RRC A instructions of Intel 8051

microcontroller. BTL 4 Analyze

15 Compare the use loader in a computer system and locator

in an embedded system. BTL 4 Analyze

16 Analyze the need for memory management in Embedded

Systems. BTL 4 Analyze

17 How does a program reside in ROM in embedded systems? BTL 5 Evaluate

18 Assess the additional structural units in advanced embedded

processor. BTL 5 Evaluate

19 Decide how suitable memory will be selected for the design

of the embedded system. BTL 6 Create

20 Generalize the characteristics of embedded computing

applications.

BTL 6 Create

PART B

1 Describe about embedded hardware units and devices in a

system. (13) BTL 1 Remember

2 (i) Describe in detail about the functional pin diagram of

8051 Microcontroller. (7)

(ii)Examine the memory structure of Intel 8051

microcontroller. (6)

BTL 1 Remember

3 (i) List the arithmetic instructions, Shift and Rotate

instructions and explain with examples in 8051. (7)

(ii) List the Data transfer and Branching Instructions and

explain with examples in 8051. (6)

BTL 1 Remember

4 Describe the internal architecture of the 8051

microcontroller with a block diagram. (13) BTL 1 Remember

5 (i)Discuss, in detail about the embedded system life cycle

and tools used in the design process. (8)

(ii)Estimate how to code the hardware in the view of

Hardware and software duality. (5)

BTL 2 Understand

6 Summarize briefly about the Embedded Hardware And

Software Units. (13) BTL 2 Understand

7 Describe about the design process of a system. (13) BTL 2 Understand

8 Discuss about the embedded software units in a system.

(13) BTL 3 Apply

9 Examine about the interrupt structure of 8051

microcontroller and explain how they are prioritized.

(13)

BTL 3 Apply

10 (i) Explain briefly about external data move operation in

8051 along with necessary programs. (7)

(ii) Show the various addressing modes supported by 8051.

Explain with examples. (6)

BTL 4 Analyze

11 Explain in detail about 8051 I-O port structures and their

operations. (13) BTL 4 Analyze

12 What are the skills needed for a hardware and software

engineer to design an embedded system application? (13) BTL 5 Evaluate

13 (i)Discuss about the concept of memory banks of 8051. (8)

(ii) Explain data memory structure of 8051. (5) BTL 6 Create

14 Write an ALP to convert ASCII to HEXA conversion,

HEXA to ASCII Conversion using 8051 instruction set.

(13)

BTL 6 Create

PART C

1 Summarize about the operation of program counter and

stack in 8051. (15) BTL 5 Evaluate

2 (i) Explain about the organization of internal RAM and

special function registers of 8051 microcontroller in detail.

(8)

(ii) Discuss about the different methods of memory address

decoding in 8051. (7)

BTL 5 Evaluate

3 Write an 8051 ALP for (a) BCD addition of two numbers

(b) Sum of elements in an array. (15) BTL 6 Create

4 Write an 8051 program to find square of a given number

and with necessary flowchart. (15) BTL 6 Create

UNIT III- INTERFACING WITH 8051

Input-Output Interfacing – Bus Standards – PCI – ISA – Timing And Control – Input Output

Devices –Serial And Parallel Communication – Motor Control-Programming Display

Devices – ARM Architecture

PART - A

S.No Questions BT

Level

Competence

1 How is serial data I/O possible in 8051? BTL 1 Remember

2 How many timers do we have in Intel 8051

microcontroller? BTL 1 Remember

3 List out some of the timers that can be used as event

counters in Intel 8051 microcontroller. BTL 1 Remember

4 What is ISA? BTL 1 Remember

5 Name the pins used for the second serial port. BTL 1 Remember

6 What are the voltage levels used in RS232C connectors? BTL 1 Remember

7 Distinguish between synchronous and asynchronous data

transfer. BTL 2 Understand

8 How can data be transferred to the LCD from a port using

only 4 port lines? BTL 2 Understand

9 How does LCD distinguish between data and command? BTL 2 Understand

10 Why do we need at least one timer device in an embedded

system? BTL 2 Understand

11 Mention the functions of the MAX232 chip. BTL 3 Apply

12 What is the function of EOC pulse? BTL 3 Apply

13 List the different phases involved in the embedded system

life cycle design. BTL 3 Apply

14 How is pulse generated from microcontroller for stepper

motor control? BTL 4 Analyze

15 How can an external frequency be counted using the Intel

8051 microcontroller? BTL 4 Analyze

16 How can a microcontroller be used to control

automatically the speed of a DC motor? BTL 4 Analyze

17 Compare serial and parallel communication. BTL 5 Evaluate

18 Compare PCI with ISA. BTL 5 Evaluate

19 Generalize about Timer Modes of operation. BTL 6 Create

20 What is the advantage of placing an optoisolator

between the motor and the microcontroller? BTL 6 Create

PART B

1 (i) Describe about the interfacing of 4×4 matrix keyboard

to the 8051. (7)

(ii)Describe the interrupt structure of 8051 microcontroller

and explain how they are prioritized. (6)

BTL 1 Remember

2 (i)Describe about external memory interfacing to 8051.

(8)

(ii)Write notes on 8051 timer and counter programming.

(5)

BTL 1 Remember

3 (i)Discuss about the timers of 8051 used to produce time

delay in timer mode. (8)

(ii)Describe about TMOD function register and its timer

modes of operations. (5)

BTL 1 Remember

4 List the features of ARM processor and explain them in

detail. (13) BTL 1 Remember

5 Summarize the following parallel communication devices:

a. ISA bus

b. PCI bus (13)

BTL 2 Understand

6 Discuss in detail, the hardware and software support

provided by 8051 for serial communication. (13) BTL 2 Understand

7 Discuss how to program and interface LCD to an 8051.

(13) BTL 2 Understand

8 (i)Derive the format of I/O mode set control and BSR

control word of programmable peripheral interface. (7)

(ii)Mention in detail about the operating modes of PPI. (6)

BTL 3 Apply

9 Draw the schematic diagram for interfacing a stepper motor

with 8051 microcontroller and write an 8051 based

assembly language program for changing speed and

direction of the motor. (13)

BTL 3 Apply

10 Explain in detail about the I/O port structure of Intel 8051

microcontroller. (13) BTL 4 Analyze

11 (i)Explain the keyboard interfacing using 8051. (7)

(ii) Explain the sensor interfacing using 8051. (6)

BTL 4 Analyze

12 Assume that a switch is connected to pin P2.0.write a

program to monitor the Switch and perform the

following :

(a) If SW=0 send the message “hello “to the serial #0 port.

(b) If SW=1 send the message “Goodbye “to the serial #1

port. (13)

BTL 5 Evaluate

13 (i) Design a system for interfacing ADC with 8051. (7)

(ii) Design a system for interfacing DAC with 8051. (6) BTL 6 Create

14 (i) Explain about processor and memory organization of

ARM processor. (7)

(ii) Examine in detail about real-time clock and interrupt

base controlling in 8051. (6)

BTL 6 Create

PART C

1 Explain in detail about the ARM architecture with

schematic diagram. (15) BTL 5 Evaluate

2 Summarize about the operation of serial port with associated

register. (15) BTL 5 Evaluate

3 Write an 8051 assembly language program to toggle all bits

of P2 continuously every 500ms.Use timer 1, mode 1 to

create the delay. (15)

BTL 6 Create

4 With relevant diagrams, Explain about timer and counter

functional unit of microcontroller 8051. (15)

BTL 6 Create

UNIT IV- REAL – TIME OPERATING SYSTEM

Inter Process Communication – Signal Functions – Socket Programming – Mailbox - Pipes

– RTOS –OS Services – Process Management - Timer Function –Event Function – Memory

Management –Device, Files and I/O Subsystem – Basic Design of RTOS

PART - A

S.No Questions BT

Level

Competence

1 What are the different states of a task? BTL 1 Remember

2 List out the importance of pre-emptive scheduling. BTL 1 Remember

3 Define: Inter process communication BTL 1 Remember

4 Define shared data problem. BTL 1 Remember

5 What is counting semaphore? BTL 1 Remember

6 What are the main objectives of RTOS? BTL 1 Remember

7 Distinguish between process, threads and tasks. BTL 2 Understand

8 Differentiate P and V semaphores. BTL 2 Understand

9 Distinguish Timer and event function. BTL 2 Understand

10 Mention the consequences of context switching. BTL 2 Understand

11 Examine the term process in operating systems. BTL 3 Apply

12 Classify task in operating systems. BTL 3 Apply

13 Examine about Priority inversion? BTL 3 Apply

14 Compare the difference between RTOS and Operating

System. BTL 4 Analyze

15 Point out the features of Remote Procedure Call. BTL 4 Analyze

16 Point out some advantages of Real Time operating System. BTL 4 Analyze

17 What is the importance of device management in an

OS for an embedded system?

BTL 5 Evaluate

18 Obtain Synchronization process in operating systems. BTL 5 Evaluate

19 Generalize the concept of Deadlock situation? BTL 6 Create

20 Compose few important examples for I/O subsystems. BTL 6 Create

PART B

1 Describe in detail about device management in OS.

(13)

BTL 1 Remember

2 Describe how the file management in RTOS differs from

conventional operating system. (13)

BTL 1 Remember

3 Describe about Socket programming in RTOS.

(13)

BTL 1 Remember

4 Define RTOS. Explain the basic design of RTOS in Detail.

(13)

BTL 1 Remember

5 (i) Differentiate about mailbox and pipe in RTOS. (6)

(ii) Discuss about the types of semaphore. (7)

BTL 2 Understand

6 (i) How RTOS schedules the multiple tasks in real time?

Describe with an example. (6)

(ii) How the interrupts are serviced in the RTOS

environment? Describe with an example. (7)

BTL 2 Understand

7 Compare and contrast the various scheduling schemes used

in RTOS. (13)

BTL 2 Understand

8 Determine the various signal function used in RTOS. (13) (13) BTL 3 Apply

9 Classify Timer and event function and explain in detail.

(13)

BTL 3 Apply

10 (i) Explain the goals and structure of operating system

services. (5)

(ii) Explain, in detail, about the management functions of

kernel. (8)

BTL 4 Analyze

11 (i) Assess the issues involved in the design of RTOS. (7)

(ii)Explain the thread scheduling policies in the RTOS. (6)

BTL 4 Analyze

12 (i) Justify the need for necessity of RTOS and when is it

not necessary in the embedded systems. (7)

(ii) List some examples for semaphore, mailbox, and

message queue and explain in detail. (6)

BTL 5 Evaluate

13 Develop a system with Process management in RTOS used

for various applications. (13)

BTL 6 Create

14 (i) Describe, in detail, about how the inter process

communication is carried out in RTOS. (7)

(ii) Write, in detail, the importance of memory

management unit in RTOS environment. (6)

BTL 6 Create

PART C

1 Explain about Interrupt routine in RTOS and handling

service calls in RTOS. (15)

BTL 5 Evaluate

2 Summarize about Multi process and multi thread in an

application. (15)

BTL 5 Evaluate

3 Discuss about various RTOS task scheduling models. (15) BTL 6 Create

4 Describe about device, File and I/O stem in RTOS

embedded for an application.

(15)

BTL 6 Create

UNIT V- RTOS PROGRAMMING

Basic Functions – Types Of RTOS – RTOS μCOS – RT Linux – Real Time Linux Functions-

Programming With RT Linux – Case Study

PART - A

S.N

o Questions

BT

Level

Competence

1 What are the various RTOS components? BTL 1 Remember

2 Name any two important RTOS. BTL 1 Remember

3 What is meant by well tested and debugged RTOS? BTL 1 Remember

4 What is sophisticated multitasking embedded system? BTL 1 Remember

5 Name few applications for the MUCOS. BTL 1 Remember

6 What are the task service functions supported by RTLINUX? BTL 1 Remember

7 Give the name of the function used in MUCOS environment

to create initialize memory partition. BTL 2 Understand

8 Give the software components needed to design smart card. BTL 2 Understand

9 Outline the hardware units needed to design Automatic

chocolate vending systems. BTL 2 Understand

10 What is microkernel? BTL 2 Understand

11 Mention four real time thread functions used in RTLINUX. BTL 3 Apply

12 Mention the features of RT Linux. BTL 3 Apply

13 List out the memory functions used in MUCOS environment. BTL 3 Apply

14 List any two distinguishing features of LINUX BTL 4 Analyze

15 Distinguish between hard and soft real time systems. BTL 4 Analyze

16 Discuss the importance of MACRO functions used in

MUCOS environment. BTL 4 Analyze

17 Why do we need RTOS for embedded application? BTL 5 Evaluate

18 Assess the use of rtf_flush() function in RTLINUX? BTL 5 Evaluate

19 Show an example to describe RT Linux functions. BTL 6 Create

20 Discuss the different types of scheduling supported by

MUCOS? BTL 6 Create

PART B

1 (i)List and explain various functions related to thread

manipulation in RT Linux. (7)

(ii)Describe the features of MUCOS RTOS. (6)

BTL 1 Remember

2 (i)Derive a code for the kernel mode of RTLINUX. (8)

(ii)List out a table that gives MUCOS environment’s

features. (5)

BTL 1 Remember

3 (i)Explain in detail about the RTOS programming tool

MUCOS environment. (8)

(ii)List out the uses of MUCOS environment. (5)

BTL 1 Remember

4 Mention some of the alternative systems in RTOS for

responding a hardware source call with a neat sketch.

(13)

BTL 1 Remember

5 Discuss the various factors to be considered for the

selection of RTOS. (13) BTL 2 Understand

6 Discuss in detail about the essential properties of Real time

operating Systems. (13) BTL2 Understand

7 Illustrate the steps behind in programming with RT Linux.

Write your own program and explain it. (13) BTL2 Understand

8 Draw and explain basic system of an Automatic chocolate

vending system. (13) BTL 3 Apply

9 Mention the basic functions expected from kernel of RTOS

environment and explain with examples. (13) BTL 3 Apply

10 Explain in detail about module and thread functions in

RTLINUX. (13) BTL 4 Analyze

11 Explain the case study of an embedded system for an

adaptive cruise control system in a car and analyze it. (13) BTL 4 Analyze

12 Write RT Linux program to create a thread and execute

once every second and during each iteration print ‘Hello

World’. (13)

BTL 5 Evaluate

13 Design and develop a case study of an embedded system

for a smart card. (13) BTL 6 Create

14 (i)Discuss the features of RTLINUX environment. (6)

(ii)Briefly explain the types of RTOS. (7) BTL 6 Create

PART C

1 Explain about the role of an embedded application which

provides extensive support in home automation. (15) BTL 5 Evaluate

2 List out the basic functions expected from kernel of RTOS

environment and explain them all with suitable examples.

(15)

BTL 5 Evaluate

3 (i)Discuss how the task of reading ports in smart card

synchronizes with the port device driver. (8)

(ii)Generalize the tasks and ISRs required for a smart card

system. Explain the actions of each and discuss the task

priority assignments in a smart card system. (7)

BTL 6 Create

4 Design and develop a case study of an embedded system for

an ATM machine. (15) BTL 6 Create