This lecture covers MicroC/OS-II, a real-time kernel developed by Jean-J. Labrosse since 1992. It is well-documented, portable, robust, and reliable, with multitasking capabilities and deterministic functions. Topics include soft/hard real-time systems, foreground/background systems, task management, multitasking, kernel, scheduler, and mutual exclusion. The lecture also discusses preemptive and non-preemptive kernels, reentrant functions, task priorities, rate monotonic scheduling, priority inversion, intertask communication using semaphores, event flags, message mailboxes, and message queues. It concludes with clock ticks and their role in system timing.