Round Robin or Cyclic Scheduling

Round Robin or Cyclic Scheduling 
A scheduling algorithm in which the tasks are scheduled in a sequence from a list of ready tasks. 

Real Time Operating System

Real Time Operating System
Operating system with real time task scheduling, interrupt-latency control, synchronization of tasks with IPCs, predictable timing and synchronization behavior of the system.

Operating system

Operating system
A system having kernel functions, file management functions and other functions also.

Kernel

Kernel 
A basic unit of any OS that includes the functions for processes, memory, task scheduling, inter process communication, management of devices, IOs , and interrupts and may include the file systems and network subsystem in a certain OSs.

Remote Procedure Call

Remote Procedure Call 
A method used for connecting two remotely placed methods by first using protocol for connecting the processes. It is used in the cases of distributed tasks.

Socket

Socket
It provides the logical link using a protocol between the tasks in a client-server or peer-to-peer environment.

Pipe

Pipe
A task sending the messages used by another task using these as input. A pipe can be a device like file which also a virtual device.