FreeBSD is Distributed Operating System Real-time Operating System Mobile Operating System Embedded Operating System
Answers
Answer:
A Real-Time Operating System (RTOS) comprises of two components, viz., “Real-Time” and “Operating System”.
An Operating system (OS) is nothing but a collection of system calls or functions that provides an interface between hardware and application programs. It manages the hardware resources of a computer and hosting applications that run on the computer. An OS typically provides multitasking, synchronization, Interrupt and Event Handling, Input/ Output, Inter-task Communication, Timers and Clocks, and Memory Management. The Core of the OS is the Kernel which is typically a small, highly optimized set of libraries.
Real-time systems are those systems in which the correctness of the system depends not only on the logical result of the computation but also on the time at which the results are produced.
RTOS is therefore an operating system that supports real-time applications by providing logically correct results within the deadline required. Basic Structure is similar to the regular OS but, in addition, it provides mechanisms to allow real-time scheduling of tasks.
Though real-time operating systems may or may not increase the speed of execution, they can provide much more precise and predictable timing characteristics than the general-purpose OS.