Characteristics of real time systems

Characteristics of a real-time system, List the characteristics of a real-time system, What are the important characteristics of a real-time system, List the factors that define a real-time system

Characteristics of Real-time systems

• Timeliness and predictability 
• A system should perform correct operations within the specified time.

• Typically embedded in a large complex system 
• A system which is embedded in a larger system to monitor and control the larger system.

• Dependability (reliability) and fault tolerance 
• Reliability is about how often a system may fail. In other words, how efficiently a system can work over a period of time. 
• Fault tolerance is about the ability to recognize and handle failures.

• Concurrency 
• A system that is capable of handling the input from the environment simultaneously.

• Explicit timing constraints (soft, firm, and hard) 
• A soft system is a system that meets its deadline but may not within time. 
• A hard system has to meet its deadline within the specified time. 
• A firm system has to meet its deadline within the time specified failing which the result may not be accepted.

• Failure will normally involve cost 
• Cost would mean the financial cost or impact on human or other lives.

• Testing of a real-time system 
• Mostly a real-time system can be tested with simulations because of the cost involved in testing with actual environments.

********************

Go to REAL TIME DATABASE Home page