Expertise: RTOS Firmware

RTOS is fast, typically used for real-time applications that processes data and events that have critically defined time constraints.

Real-time operating systems are event-driven and preemptive, meaning the OS is capable of monitoring the relevant priority of competing tasks, and make changes to the task priority. Event-driven systems switch between tasks based on their priorities, while time-sharing systems switch the task based on clock interrupts.

RTOS doesn’t typically provide the sophisticated tools or levels of abstraction (e.g. Hardware Agnosticism) typical of a full operating system.  Think of it as occupying the space between Bare Metal and full OS.