What is a real-time operating system?

Answer 1

• manage the microprocessor and other system resources to meet the requirements of the application
• be able to respond to, and synchronize with, events
• be able to move data efficiently between processes
• be able to manage the demands of the process with re­spect to time (or other independent variable)
• perform in a predictable manner with operations that take place within a predictable about of time

Answer 2

A Real Time Operating System or RTOS is an operating system for creating real time applications. In real time the correctness of the application depends on the logical correctness and the time of execution. i.e. It is time critical. The output must be produced within the dead-line specified. Such real time systems are called hard real time systems. In such systems the delayed results may cause in a catastrophy. There are other real time systems called soft real time, which can tolerate the delay in results, but will result in poor quality outputs.

Answer 3

Real time operating system has an interface which is embedded within its environment. Its essential properties include sensing and monitoring an event with the use of sensors.