Write short notes on the following:

Real time operating system

RTOS (Real time operating system) is designed to handle real life scenarios and problems. Such operating systems have the capability to prioritise the processes, minimise execution time, and work independently with no interdependencies. Real time operating system is used when the time span required to react to an input is rigid and time bound. Even a microsecond of delay will cause the system to fail. Examples are: Air traffic control, Robots, Weapon systems, and Industrial control systems.
There are two types of Real Time Operating Systems:

1. Hard Real-time systems — These systems guarantee that critical tasks are completed in time.
2. Soft Real-time systems — These systems are less restrictive. Examples are: Undersea exploration, Planetary rovers, and Virtual reality.