Dr. Mark Humphrys

School of Computing. Dublin City University.

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My big idea: Ancient Brain

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PC operating systems (single user)

Microsoft dominance. Been that way for a long time.



Usage share of PC operating systems, 2016.
Microsoft dominance, but not quite monopoly.
Even 1 percent of these numbers is millions of machines.



Desktop Operating System Market Share, 2016, by marketshare.hitslink.com




Usage share of desktop operating systems up to 2015.
From StatCounter.com (and main site).
Can get 2016 figures, but yearly plot is now broken?




PC operating systems



ancientbrain.com      w2mind.org      humphrysfamilytree.com

On the Internet since 1987.

Wikipedia: Sometimes I link to Wikipedia. I have written something In defence of Wikipedia. It is often a useful starting point but you cannot trust it. Linking to it is like linking to a Google search. A starting point, not a destination. I automatically highlight in red all links to Wikipedia and Google search and other possibly-unreliable user-generated content.