Real- Time Systems and Real- Time Operating Systems
#1

Definition
Real-time systems play a considerable role in our society, and they cover a spectrum from the very simple to the very complex. Examples of current real-time systems include the control of domestic appliances like washing machines and televisions, the control of automobile engines, telecommunication switching systems, military command and control systems, industrial process control, flight control systems, and space shuttle and aircraft avionics.

All of these involve gathering data from the environment, processing of gathered data, and providing timely response. A concept of time is the distinguishing issue between real-time and non-real-time systems. When a usual design goal for non-real-time systems is to maximize system's throughput, the goal for real-time system design is to guarantee, that all tasks are processed within a given time. The taxonomy of time introduces special aspects for real-time system research.

Real-time operating systems are an integral part of real-time systems. Future systems will be much larger, more widely distributed, and will be expected to perform a constantly changing set of duties in dynamic environments. This also sets more requirements for future real-time operating systems
Timeliness is the single most important aspect of a real -time system. These systems respond to a series of external inputs, which arrive in an unpredictable fashion. The real-time systems process these inputs, take appropriate decis ions and also generate output necessary to control the peripherals connected to them. As defined by Donald Gillies "A real-time system is one in which the correctness of the computations not only depends upon the logical correctness of the computation but also upon the time in which the result is produced. If the timing constraints are not met, system failure is said to have occurred."

It is essential that the timing constraints of the system are guaranteed to be met. Guaranteeing timing behaviour requires that the system be predictable.

Most real -time systems interface with and control hardware directly. The software for such systems is mostly custom -developed. Real -time Applications can be either embedded applications or non -embedded (desktop) applications. Real -time systems often do not have standard peripherals associated with a desktop computer, namely the keyboard, mouse or conventional display monitors. In most instances, real-time systems have a customized version of these devices.



Real-time Programs: The Computational Model
A simple real -time program can be defined as a program P that receives an event from a sensor every T units of time and in the worst case, an event requires C units of computation time.

Assume that the processing of each event must always be completed before the arrival of the next event (i.e., when there is no buffering). Let the deadline for completin g the computation be D. If D < C, the deadline cannot be met. If T < D, the program must still process each event in a time O/ T, if no events are to be lost. Thus the deadline is effectively bounded by T and we need to handle those cases where C O/ D O/ T.
Reply
#2
to get information about the topic Real Time Operating Systems full report ppt and related topic refer the page link bellow

http://studentbank.in/report-rtos-real-t...ull-report

http://studentbank.in/report-real-time-o...ed-systems

http://studentbank.in/report-real-time-o...tem--29497

http://studentbank.in/report-rtos-real-t...7#pid54197

http://studentbank.in/report-real-time-o...ng-systems

http://studentbank.in/report-real-time-o...ems--14038

http://studentbank.in/report-real-time-o...bedded-ics

http://studentbank.in/report-real-time-s...ng-systems

http://studentbank.in/report-real-time-s...ng-systems

http://studentbank.in/report-embedded-op...plications

http://studentbank.in/report-real-time-o...74#pid4174
Reply
#3
Want more information abt this topics with vedio presentation seminar
Reply

Important Note..!

If you are not satisfied with above reply ,..Please

ASK HERE

So that we will collect data for you and will made reply to the request....OR try below "QUICK REPLY" box to add a reply to this page
Popular Searches: question bank for operating systems concepts, electrodynamic arrow of time, real time usage of a dual framework and algorithms for targeted online data delivery project, wireless real time communication, ebook pdf real time systems c m krishna, time magazine 10 best electric, automatic time manager using pc circuit,

[-]
Quick Reply
Message
Type your reply to this message here.

Image Verification
Please enter the text contained within the image into the text box below it. This process is used to prevent automated spam bots.
Image Verification
(case insensitive)

Possibly Related Threads...
Thread Author Replies Views Last Post
  HVDC TRANSMISSION SYSTEMS project topics 9 11,227 01-05-2015, 04:45 PM
Last Post: seminar report asees
  artificial intelligence techniques in power systems full report computer science technology 3 5,694 08-08-2014, 10:39 PM
Last Post: seminar report asees
  Space Time Adaptive Processing computer science crazy 4 5,122 04-03-2014, 07:03 PM
Last Post: Guest
  Voltage Stability Improvement using Static Var Compensator in Power Systems project report tiger 4 13,375 12-07-2013, 11:29 AM
Last Post: computer topic
  Smart Cameras in Embedded Systems computer science crazy 8 9,230 15-03-2013, 04:51 PM
Last Post: AMBARISH BC
  MODERN TRENDS IN POWER TRANSMISSION Systems project topics 12 16,065 11-03-2013, 03:50 PM
Last Post: computer idea
  Condition Based Maintenance of Underground Cable Systems computer science crazy 14 12,054 06-03-2013, 11:16 PM
Last Post: Guest
  Real-Time Obstacle Avoidance computer science crazy 4 5,573 15-02-2013, 12:39 AM
Last Post: Guest
  Embedded Systems In Automobiles computer science crazy 3 3,726 24-01-2013, 02:49 PM
Last Post: seminar details
  Robotic Monitoring of Power Systems project topics 26 19,969 12-12-2012, 01:44 PM
Last Post: seminar details

Forum Jump: