Almost 600 million computers were working in the world in 2000.
The country with the most computers was the United States, with more than 164 million, followed by Japan, Germany, the United Kingdom, France, Italy, Canada, China, Australia, and South Korea, in that order.
The number of personal computers in use worldwide hit one billion in June 2008, and is expected to reach 2 billion by 2014.
There were 14 million netbooks sold in 2008, and mobile devices like the iPad from Apple have become very popular.
In contrast, only 48 thousand Personal Computers were sold in 1977.
The average selling price for a PC in 2008 was $569 for desktop computers and $689 for laptops in the U.S.