MIND MAP

This post is about Mindmaps. A mind map is diagram used to represent words,tasks,ideas or other items which are connected,linked and arranged around a central idea or keyword.As seen in the image above this mind map is based on OPERATING SYSTEMS.

An OPERATING SYSTEM(OS) is a set of programs that manage computer hardware resources and provide  common services for the computer application.An OS is the most important SYSTEM SOFTWARE that runs in a computer.It acts an intermediary between APPLICATION PROGRAMS and COMPUTER HARDWARE for hardware functions such as input,Output and memory allocation.Most of the Operating systems today are very USER FRIENDLY.An OS can be classified as follows:
1.REAL TIME
2.SINGLE USER/MULTI USER
3.SINGLE TASKING/MULTI TASKING

A real time OS responds to input instantly.General purpose operating systems like DOS and UNIX are not real time others are.
A Single user OS allows only 1 user to run programs but Multi-user OS allows multiple users to run programs at the same time.
Like single user A single tasking OS allows only one task to be performed at a time whereas a Multitasking OS allows more
than one program to run concurrently.

Other Types
1.DISTRIBUTED
2.EMBEDDED
A distributed Os manages a group of independent computers and makes them accessible from a single computer.Its useful for
computers in group work in a cooperation.An Embedded OS are designed to operate on small machines like PDA's with less anatomy.They are able to operate with a limited number of resources.

Some most widely used and popular Operating Systems today are WINDOWS,MAC OS X,ANDROID etc.