KERNAL IN OPERATING SYSTEM:

 the kernel provides the most basic interface between the computer itself and the rest of the operating system. the kernel is responsible for the management of the central processor. 

the kernel includes the dispatcher to allocate the central processor, to determine, the cause of an  interrupt  and initiate its processing. 

        kernel is the core of an operating system. The main function  of kernel are 

.it provides a mechanism for creation  and deletion  of process.

 it provides CPU scheduling, memory management and device management for these process.

it provides synchronization, tools to that the processes can synchronize their actions.

 it provides communication  tools to that processes can communicate with each other. 

scheduling is fundamental operating system function. almost all computer.

 CPU is one of the primary computer resources, its scheduling is often performed  in the 

   operating system.

a kernel provides an environment to build an operating system in which the designer  has considerable flexibility. 

the policy and optimization decisions are not made, at kernel level. an operating system is an  orderly growth of software  over kernel where all decisions regarding process scheduling, resource allocation, execution environment, file system, and resource protection are made.