The number of portable computers is expected to increase by 16% in 2009 to 169.6 million units according to a recent report from DisplaySearch.

Despite the big increase in the number of units sold, global revenues are expected to fall by 7% to $109 billion in 2009, down from $117 billion in 2008.

According to DisplaySearch, the drop in revenue was due to a 20% decrease in the average selling price or notebooks in 2009 and due to the fact that more consumers are buying inexpensive netbooks instead of more expensive notebook computers.

The number of mini-notebook computers or netbooks is expected to increase 103% in 2009 to 33.3 million units while notebook PC sales are expected to increase 5% to 136.3 million units. Netbooks will account for about one-in-five portable computers sold in 2009.

In 2010, DisplaySearch expects the notebook PC market to grow by 16%, with higher than average growth for mini-notes and ultra-portable notebook PCs.

“Mini-notes continue to be a significant piece of the notebook PC pie, in terms of both units and revenue. However, our long-term outlook is that the mini-note share of the notebook PC market has stabilized, and will remain at approximately 20% through 2011 before starting to erode.” said John F. Jacobs, Director of Notebook Market Research.

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