Q1 what is premptive and non preemptive in operating system

I know
general purpose operating system support non preemptive scheduling and non preemptive kernel

real time operating system support preemptive scheduling and preemptive kernel

I am not really going to design just I want learn something before design
I want to design my real time operating system , so I need features , requirement component and tool

I need to develop program For real time operating system
my effort
1)basic tool
compiler
linker
debugger

2)language
c language

3)requirement
requirement of real time os should be fast

features
kernel - micro kernel
scheduler - real time scheduler
multitasking - multitasking
scheduling - preemptive scheduling


I think I have forgotten some features

 

I know that window ce and RT Linux both are different type of real time os
but I don't understand the basic difference

window ce
micro kernel
priority based scheduling
multitasking
shared memory
interrupt handler

RT LInux

micro kernel
priority based scheduling
multitasking
shared memory
interrupt handler

both have common features so what is basic difference between them

 

You can't compare on a limited feature list.

My Car
Red
Four Wheels
Steering Wheel
Gas Pedal
Brakes
Air Conditioning

Your Car
Red
Four Wheels
Steering Wheel
Gas Pedal
Brakes
Air Conditioning

How can you tell the difference, if you can.

 

can you give me some clue to understand basic difference

 

Take a look here for more information.

 

designing a city with skyscrapers before getting the dog's hut right