How Many Computers Are There in the World?

As of October 2014, there were nearly 2 billion personal computers used worldwide. By comparison, the 1 billionth personal computer was shipped in 2002, although 1 billion computers were in use in 2008. Several research groups believe the 2-billion mark of PC usage will occur sometime in 2015 or 2016. Tablet computers and mobile devices are gradually gaining on PC usage.