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There is 2 type of real-time system
a) Soft real time system ->partially meet the deadline means can do the round of the time to meet the dead line.
b) Hard real time system -> Strictly meet the deadline.
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Ajay Gautam
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∙ 12y ago
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What are the different types of operating systems?
There can be an infinite number of "types", depending on how you want to classify them. Free or proprietary? Realtime? Unix-like? 16, 32, or 64-bit? Server, desktop, or embedded? By kernel type? This question can't really be answered without better context.
Differences between single user operating system and real-time operating system?
A single user OS could also be a real-time system. The differences in the two are based on how a process is given control or priority within the system. Realtime systems give preferences to realtime control processes (realtime runs at a much higher priority level). Most single-user operating systems treat processes with equal priority unless you indicate that a certain process is to receive preferential treatment. This can be done by raising the priority of the user process to that of realtime, meaning it will receive resources (such as CPU cycles) above other programs in the system.
What are the requirements of realtime operating systems?
Technically, all operating systems are "realtime." The term realtime just means it happens immediately, versus being delayed. Most operating systems today are actually a blend of realtime and "batch." Batch processing is doing something later, usually waiting until you have more than one thing (a "batch") to do. An example of batch processing is when a company processes your payment. They don't post each payment to their computer system - they wait until all the payments are in for the day (or at least a good number of them) and then post them as a group - so thousands of payments get posted at one time (posted just means processed through some financial system). Some businesses, such as banks, will use both realtime and batch processing for the same items. For example, if you make a deposit with a teller, you will probably be able to go to Starbucks next door, sign on the internet, and see the the deposit posted to your account already. This is "realtime" processing. However...this is probably only a "memo" post. This means it was only posted to the online system so that you can get to it through the internet or telephone. During the night, your deposit will be sent to a central site and batch processed with thousands of other deposits. The night post will be to the "real" posting system for checks, the "Demand Deposit Accounting" system, or DDA. The biggest use "realtime" operating systems is actually in what is called "embedded" systems. These are operating systems and application code that is running on a single board and embedded in something physical - a car, a toaster, a TV set, a DVD player, an IPOD. Today, if it is electronic, it probably has an embedded system (or even several). Embedded systems are primarily realtime operating systems - they collect some statistics in realtime and allow access to them later in batch mode (here are all the errors that occurred on your car since it was last serviced...) but their real job is to control the device they are embedded in - and do it in "realtime" or immediately. This means they must be: - dependable - they must operate in all sorts of conditions - hot, cold, dirty, greasy, noisy, vibrations etc. - timely - they must be fast enough to think about an action, and get it done right away. For example, if you are an embedded system in a car that controls skidding, you must be able to react to the skid in "realtime" - as it is happening, and control brakes, steering and gas as appropriate to what is happening (skid starting, car is curving to right, skid is ending). - flexible - in the previous example, the embedded system to control skids must be able to handle a car going any speed, curving right, left or going straight, know when it is "over compensating" and correct it etc. It must be able to make the same decisions a knowledable human would make in the same circumstances. - sized properly - again, the previous example. The embedded system must be able to recognize and react to thousands of varying facts (speed, direction, condition and status of mechanical systems etc.). You must have a processor fast enough to process the data in realtime, and enough storage to accept, and display, conditions and status of "analog" devices. Note - most realtime systems are in what we know as "analog" devices. This just means they have something mechanical about them. Most parts of a car are analog, as are most TV set these days. This is versus "digital", where parts don't move, signals flow to devices that are able to convert the final result to analog (for instance, a digital TV will receive a broadcast signal, convert it to a certain channel and pass it on to the screen to display. Even screens such as plasma and LCD are ultimately analog - they must decide which dots (pixels) to display, in what color and what shade. The decision can be made digitally, controlling the nuances of the display in realtime.
What are three types of operating systems?
Mac OS X, Linux, and Microsoft Windows are three types of operating systems. Single-user, multi-tasking, multi-user, and real-time operating systems, or RTOS, are different types of operating systems that computers use.
What are the different types of mainframe systems?
what are some different types of mainframes
How do you design and analysis of real time systems?
A complete answer to this question is beyond the scope of this website, as it requires several years of college courses and about twice that in on the job experience to properly learn. However it is basically an extension of standard systems analysis and design (which is still at least 2 full college courses) with a large amount of tedious bookkeeping added to make certain that all realtime requirements are fully met.Another point that is vital to understand is whether this is a hard realtime system or a soft realtime system. Hard realtime systems are much more difficult, as failure to meet even one of the real time requirements means total failure of the system to fulfill its purpose, making it useless. Soft realtime systems on the other hand are permitted to occasionally miss deadlines or otherwise fail to consistently meet some of the realtime requirements, as long as it is able to catchup later and meet the realtime requirements on the average.
When was Realtime Worlds created?
Realtime Worlds was founded in 2002.
What are the different types of operating systems?
There can be an infinite number of "types", depending on how you want to classify them. Free or proprietary? Realtime? Unix-like? 16, 32, or 64-bit? Server, desktop, or embedded? By kernel type? This question can't really be answered without better context.
What is real time system?
a realtime system is one that must react to inputs with outputs in real time. at the simplest this means the system must meet deadlines. there are 2 types of realtime systems:soft realtime systems only have to meet deadlines on the average, its OK to occasionally miss a deadline the system will still keep functioning. such systems typically only interact with people. if the system misses too many deadlines the people get irritated with its slowness, but the task still gets done.hard realtime systems must meet all deadlines, missing a single one means the system has failedto perform the function it was designed for. such systems are typically used to control other equipment; some examples of realtime systems are: industrial process controllers, aircraft flight control systems, missile guidance systems, spaceprobe guidance and control systems, experiment data collection controllers, etc. in each of these cases missing even one deadline could result in a catastrophic failure (with possible loss of life) or permanent loss of data from an experiment costing many millions of dollars to setup.
When was Realtime Interrupt created?
Realtime Interrupt was created in 1995.
When was Realtime Associates created?
Realtime Associates was created in 1986.
When did Realtime Worlds end?
Realtime Worlds ended in 2010.
What is Realtime Worlds's population?
Realtime Worlds's population is 200.
How many pages does Marooned in Realtime have?
Marooned in Realtime has 270 pages.
When was Marooned in Realtime created?
Marooned in Realtime was created in 1986-09.
Differences between single user operating system and real-time operating system?
A single user OS could also be a real-time system. The differences in the two are based on how a process is given control or priority within the system. Realtime systems give preferences to realtime control processes (realtime runs at a much higher priority level). Most single-user operating systems treat processes with equal priority unless you indicate that a certain process is to receive preferential treatment. This can be done by raising the priority of the user process to that of realtime, meaning it will receive resources (such as CPU cycles) above other programs in the system.
What is the ISBN of Realtime Interrupt?
The ISBN of Realtime Interrupt is 0-553-37454-0.
