A History of Android

The link below is to an article that takes a look at the history of Android, the operating system.

For more visit:
http://arstechnica.com/gadgets/2016/10/building-android-a-40000-word-history-of-googles-mobile-os/

Article: Computer Operating Systems of the Past

The link below is to an article that looks at some old computer operating systems that are generally nothing more than memories these days.

For more visit:
http://www.makeuseof.com/tag/dos-forgotten-operating-systems-geek-history-lesson/