KERNEL

• Kernel is the main component of most computer operating systems.
• It is a bridge between applications and the actual data processing done at the hardware level.
• The kernel's responsibilities include managing the system's resources (the communication between-hardware and software components).
• Usually as a basic component of an operating system, a kernel can provide the lowest-level abstraction layer for the resources (especially processors and I/O devices) that application software must control to perform its function.
• It typically makes these facilities available to application processes through inter-process communication mechanisms and system calls.