windows release date and how many types of operating software and other os release date.

The first window system was come in 1980. Over the years. There have been many different version of window come in market like the most recent once are windows 2010 release in 2015, window 8 release in 2012, windows7 in 2009,windows vista in 2007.

There are mainly three types of operating system, like windows, Mac X and last one is Linux.