Operative system

operative systems

what are operative systems ?

An operating system is system software that manages computer hardware and software resources and provides common services for computer programs. types of operative systems 

Single- and multi-tasking,                                Single- and multi-user,Distributed,Templated
history

Early computers were built to perform a series of single tasks, like a calculator. Basic operating system features were developed in the 1950s, such as resident monitor functions that could automatically run different programs in succession to speed up processing. Operating systems did not exist in their modern and more complex forms until the early 1960s.[9] Hardware features were added, that enabled use of runtime libraries, interrupts, and parallel processing. When personal computers became popular in the 1980s, operating systems were made for them similar in concept to those used on larger computers.

device drivers

A device driver is a specific type of computer software developed to allow interaction with hardware devices.

examples 

Microsoft Windows
Stallings (2005). Operating Systems, Internals and Design Principles. Pearson: Prentice Hall. p. 6
 * 1) references:

Dhotre, I.A. (2009). Operating Systems. Technical Publications. p. 1.

Hansen, Per Brinch, ed. (2001). Classic Operating Systems. Springer. pp. 4–7. ISBN 0-387-95113-X.