What is in real time?
When calculating, in real time refers to a time frame that is very short and seems to be immediate. When the computer processes data at this speed, it reads and processes data as accepted and immediately brings results. For example, a website that is updated in real time will allow its viewers to see changes as soon as they happen rather than wait for the updates to be visible later.
The unrealistic computer process has no deadline. Real time system is expected to respond not only quickly but also in a predictable period of time. A good example is the system against blocking the car. The anti-blocking brake system is expected to release the vehicle brakes and prevent dangerous wheel locking in a predictably short time frame.
Unfortunately, there are times when real -time systems do not respond as needed. Such a process fails when its task is not completed before its term. There is no time limit for the system to the system. Dates must be kepty, regardless of other factors; are considered critical.
When the process is considered a difficult time in real time, it must complete its activity by a specific time. If it cannot fulfill its term, its operation is without value and the system for which it is part may face failure. However, when the system is considered soft in real time, there is some room for delay. For example, in such a system, the delayed process may not cause failure of the whole system. Instead, this may lead to a reduction in the usual quality or system quality.
Hard real time systems are often used in built -in systems. For example, consider the car control system. Such a system is considered to be heavy because the late process could cause engine failure. These systems are used when it is essential to make the task or event of the handle in a strict term. This is usually necessary when there may be damageof it or loss of life due to system failure.
real -time soft systems are usually used if there are multiple connected systems that must be maintained despite converters and circumstances. These systems are also used if concurrent access requirements are present. For example, software used to maintain travel plans for main transport companies is often soft in real time. It is essential that such software updates plans with a small delay. However, the delay of a few seconds is unlikely to cause chaos.