The short answer is that a real time OS has a very short (in real-time) and predictable latency response to interrupts and/or task thread switching when compared a standard computer or PC OS. A dedicated RT OS, meaning it performs more specific and/or limited functions can have a ten-fold decrease in the number of clock cycles or task switch times when compared to a traditional OS.
Windows is an example of a non-realtime OS.
Real time system
yes
Microsoft
Prex OS is an open source portable real-time operating system for embedded systems. Prex is designed specifically for tiny, resource-constrained platforms. It is written in ANSI C based on traditional microkernel architecture. Prex is royalty-free software released under BSD License.
Palm OS is generally not considered a real-time operating system. True real-time operating systems are multi-tasking; the "real-time" refers to the ability to effectively manage resources to achieve a result in as little time as possible. Palm OS is single-tasking, so the speed at which it performs is mostly bottlenecked by the individual application running. Windows CE is a real-time operating system; most uses of it are in multi-tasking devices. Linux is not necessarily a real-time operating system, but can be configured that way, depending on the scheduler selected.
real time os is most imp bcz there is lot of need for the applicaion on os bt bcz of time & correctness the o/p is not so goo. using rtos we cn create the crrct output for ahe application
Conventional OS aim to give users the ability to run other software that are interactive in nature to perform different tasks. On the other hand, embedded OS only run fixed set of tasks and deliver the expected results in real time.
Jean J. Labrosse has written: '[Mu]C/OS' -- subject(s): MuC/OS, Real-time control
Certain software does not run well with certain Operating Systems. So that is why some people will install 2 different OS at the same time.
Classification of Advanced OS is done as below:Architecture driven systems, and Application driven system. 1. Architecture driven: * Network OS * Distributed OS * Multiprocessor OS 2. Application driven: * Database OS * Real Time OS * Multimedia OS
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