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RMK COLLEGE OF ENGINEERING AND
TECHNOLOGY
DEPARTMENT OF ELECTRONICS AND COMMUNICATION ENGINEERING
Ms. S. Rajalakshmi
EMBEDDED AND REAL TIME
SYSTEM
Unit- 4
REAL TIME SYSTEMS
Structure of a Real Time
System
01
Estimating Program Run
Time
02
Task Assignment and
Scheduling
03
Fault Tolerance
Techniques
04
Reliability , Evaluation05
Clock Synchronization06
• Infographic StylePrescribed Text Books & Reference Books
TEXT BOOK
Jane W.S.Liu,‖ Real Time Systems‖, Pearson
Education, Third Indian Reprint, 2003.(UNIT IV)
REFERENCE
C.M. Krishna, Kang G. Shin, ―Real-Time Systems‖,
International Editions, Mc Graw Hill 1997
S.No Topic Online
Source
Duration
1 Mastering RTOS: Hands on Free RTOS and STM32Fx
with Debugging
Udemy 15 hours
2 Embedded Hardware and Operating Systems Coursera 4 weeks
• Infographic Style
 Any system where a timely response by the computer to external stimuli
is vital is a real time system.
 Real-time system runs task that have deadline
• Infographic Style
Controlling Aircraft Sometimes No……..
Soft Real Time System
Playing video games,
video conferencing
Introduction and structure of a real time system
• Infographic StyleTASKS, PROCESS, THREADS
Task-Set of program/instructions that are loaded into memory
Process- Program under execution
Thread-Unit of execution within a process
Introduction and structure of a real time system
• Infographic StyleCHARACTERISTICS OF REAL TIME SYSTEM
ISSUES IN REAL TIME COMPUTING
1. ARCHITECTURE ISSUES
 Processor Architecture
 Network Architecture
 Architecture for clock synchronization
 Fault Tolerance and Reliability evaluation
2. OPERATING SYSTEM ISSUES
 Task assignment and scheduling
 Communication protocol
 Failure Management and recovery
 Clock synchronization algorithms
3. OTHER ISSUES
 Programming Languages
 Data bases
 Performance measures
CHALLENGES IN REAL TIME SYSTEM DESIGN
MAIN DESIRABLE PROPERTIES OF REAL TIME SYSTEM
DIFFERENCE BETWEEN RTOS AND GPOS
1. STRUCTURE OF A REAL TIME SYSTEM
SCHEMATIC DECOMPOSITION OF REAL TIME CONTROL COMPUTER
THANK YOU

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Introduction and structure of a real time system

  • 1. RMK COLLEGE OF ENGINEERING AND TECHNOLOGY DEPARTMENT OF ELECTRONICS AND COMMUNICATION ENGINEERING Ms. S. Rajalakshmi EMBEDDED AND REAL TIME SYSTEM
  • 2. Unit- 4 REAL TIME SYSTEMS Structure of a Real Time System 01 Estimating Program Run Time 02 Task Assignment and Scheduling 03 Fault Tolerance Techniques 04 Reliability , Evaluation05 Clock Synchronization06
  • 3. • Infographic StylePrescribed Text Books & Reference Books TEXT BOOK Jane W.S.Liu,‖ Real Time Systems‖, Pearson Education, Third Indian Reprint, 2003.(UNIT IV) REFERENCE C.M. Krishna, Kang G. Shin, ―Real-Time Systems‖, International Editions, Mc Graw Hill 1997
  • 4. S.No Topic Online Source Duration 1 Mastering RTOS: Hands on Free RTOS and STM32Fx with Debugging Udemy 15 hours 2 Embedded Hardware and Operating Systems Coursera 4 weeks
  • 5. • Infographic Style  Any system where a timely response by the computer to external stimuli is vital is a real time system.  Real-time system runs task that have deadline
  • 6. • Infographic Style Controlling Aircraft Sometimes No…….. Soft Real Time System Playing video games, video conferencing
  • 8. • Infographic StyleTASKS, PROCESS, THREADS Task-Set of program/instructions that are loaded into memory Process- Program under execution Thread-Unit of execution within a process
  • 11. ISSUES IN REAL TIME COMPUTING 1. ARCHITECTURE ISSUES  Processor Architecture  Network Architecture  Architecture for clock synchronization  Fault Tolerance and Reliability evaluation 2. OPERATING SYSTEM ISSUES  Task assignment and scheduling  Communication protocol  Failure Management and recovery  Clock synchronization algorithms 3. OTHER ISSUES  Programming Languages  Data bases  Performance measures
  • 12. CHALLENGES IN REAL TIME SYSTEM DESIGN
  • 13. MAIN DESIRABLE PROPERTIES OF REAL TIME SYSTEM
  • 15. 1. STRUCTURE OF A REAL TIME SYSTEM
  • 16. SCHEMATIC DECOMPOSITION OF REAL TIME CONTROL COMPUTER