| ??? 02/17/05 19:28 Read: times |
#87829 - system vs OS Responding to: ???'s previous message |
Talking about a system (not an OS)
"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 at which the result is produced. If the timing constraints of the system are not met, system failure is said to have occurred." Absolutely, but where does the URTOS come in in the above statement. If you apply a URTOS to a processor like the '51, most likey "the timing constraints of the system are not met". The statement is correct in both these cases: Without an URTOS you can easily make an ISR that is waaay too long and then, of course, "the timing constraints of the system are not met". With an URTOS you can easily make something that is waaay too long and then, of course, "the timing constraints of the system are not met". So, if an OS is fast enough it is "real time" if it is not fast enough it is not "real time". But in either case it is called "real Time OS" ERGO The use of "Real Time" in the name is incorrect since whether it is, indeed, real time depends on non-OS factors. Erik |
| Topic | Author | Date |
| PASCAL Compiler For 8051. | 01/01/70 00:00 | |
| Why Pascal. | 01/01/70 00:00 | |
| Don't let Steve hear that... | 01/01/70 00:00 | |
| ? | 01/01/70 00:00 | |
| top 10 reasons | 01/01/70 00:00 | |
| Top 10 reasons why Pascal better than C | 01/01/70 00:00 | |
| webpage moved | 01/01/70 00:00 | |
| Language advice | 01/01/70 00:00 | |
| PASCAL... | 01/01/70 00:00 | |
| Ok No PASCAL. | 01/01/70 00:00 | |
| English Please, | 01/01/70 00:00 | |
| Language | 01/01/70 00:00 | |
Language | 01/01/70 00:00 | |
| Pascal for '51 | 01/01/70 00:00 | |
| ? | 01/01/70 00:00 | |
| industry standard | 01/01/70 00:00 | |
| ? | 01/01/70 00:00 | |
| they did | 01/01/70 00:00 | |
| leftwards | 01/01/70 00:00 | |
| onwards | 01/01/70 00:00 | |
| ...in cairo | 01/01/70 00:00 | |
| ...in Russia | 01/01/70 00:00 | |
| Observations | 01/01/70 00:00 | |
| Left | 01/01/70 00:00 | |
| Change in Sweden | 01/01/70 00:00 | |
| roundabouts | 01/01/70 00:00 | |
| Oh come on! | 01/01/70 00:00 | |
| Fair comment, but | 01/01/70 00:00 | |
| Order must be enforced | 01/01/70 00:00 | |
| PASCAL is good but.... | 01/01/70 00:00 | |
| personal responsibility | 01/01/70 00:00 | |
| The real problem is... | 01/01/70 00:00 | |
| OMF | 01/01/70 00:00 | |
| OMF! | 01/01/70 00:00 | |
| ? | 01/01/70 00:00 | |
| What idiot ... | 01/01/70 00:00 | |
| Pascal | 01/01/70 00:00 | |
| On the other hand... | 01/01/70 00:00 | |
| Strong typing | 01/01/70 00:00 | |
| Ok | 01/01/70 00:00 | |
| Link for PASCAL compiler. | 01/01/70 00:00 | |
| PASCAL compiler for PIC. | 01/01/70 00:00 | |
| (lack of) strong typing | 01/01/70 00:00 | |
| Power Tools | 01/01/70 00:00 | |
| Watch out....Tools in the Wrong Hands | 01/01/70 00:00 | |
| pointers | 01/01/70 00:00 | |
| Use the power in a smart way... | 01/01/70 00:00 | |
| Star Wars | 01/01/70 00:00 | |
| Nice discution. | 01/01/70 00:00 | |
| I mean "Nice argue" (my english stink) | 01/01/70 00:00 | |
| If Pascal it better than C then Why ? | 01/01/70 00:00 | |
| VHS vs Beta | 01/01/70 00:00 | |
| Tech only one aspect &Who decides ? | 01/01/70 00:00 | |
| 'Common' <> 'Popular' | 01/01/70 00:00 | |
| The case | 01/01/70 00:00 | |
| Originally... | 01/01/70 00:00 | |
| what about the schools | 01/01/70 00:00 | |
| teaching | 01/01/70 00:00 | |
| True | 01/01/70 00:00 | |
| My serve | 01/01/70 00:00 | |
| verbose | 01/01/70 00:00 | |
| I did try Ada | 01/01/70 00:00 | |
| Re: I did try Ada (Ada still required?) | 01/01/70 00:00 | |
| teaching languages | 01/01/70 00:00 | |
| not BASIC any more | 01/01/70 00:00 | |
| Strange | 01/01/70 00:00 | |
| It is hard to read for a reason | 01/01/70 00:00 | |
| Kturtle | 01/01/70 00:00 | |
| Delphi | 01/01/70 00:00 | |
| Windows vs Linux. | 01/01/70 00:00 | |
| Linux/Unix vs. Windows | 01/01/70 00:00 | |
| inertia | 01/01/70 00:00 | |
| Linux penetration | 01/01/70 00:00 | |
| free? | 01/01/70 00:00 | |
| Freedom | 01/01/70 00:00 | |
| the meaning of operating systems | 01/01/70 00:00 | |
| Linux/Windows security | 01/01/70 00:00 | |
| The Morris Worm... | 01/01/70 00:00 | |
| Is Linux Better for Micro/Embedded Sys? | 01/01/70 00:00 | |
| Start a new thread! | 01/01/70 00:00 | |
| But Linx/Windos discuused in thread | 01/01/70 00:00 | |
| Valid but... | 01/01/70 00:00 | |
| Windows vs Linux | 01/01/70 00:00 | |
| Hmm, better? | 01/01/70 00:00 | |
| 2 things - small & large embedded | 01/01/70 00:00 | |
| Size matters | 01/01/70 00:00 | |
| no, it does not | 01/01/70 00:00 | |
| Real Time | 01/01/70 00:00 | |
| paraphrase | 01/01/70 00:00 | |
| Exactly | 01/01/70 00:00 | |
| system vs OS | 01/01/70 00:00 | |
| "RT" qualifying the "OS" | 01/01/70 00:00 | |
| Who calls their OS real time? | 01/01/70 00:00 | |
| the point | 01/01/70 00:00 | |
| Determinism | 01/01/70 00:00 | |
| Tools for the job | 01/01/70 00:00 | |
| then why? | 01/01/70 00:00 | |
| Why? Because... | 01/01/70 00:00 | |
| more likely the legal dept | 01/01/70 00:00 | |
| Foot Shoot'n | 01/01/70 00:00 | |
| In the spirit... | 01/01/70 00:00 | |
| Oh, my stomach hurts | 01/01/70 00:00 |