ARLINGTON HEIGHTS, IL-The worldwide number of personal computers (PCs) in use, including Macintosh and other platforms, surpassed 820 million in 2004 and is projected to top 1 billion in 2007, according to a report by Computer Industry Almanac Inc.

According to the report, which is titled "Computers In-Use by Country," the growth in PC use is slowing as the market in the industrialized world becomes saturated. However, strong PC growth will continue in the developing world for another decade.

The United States has a large lead with over 220 million PCs in use-over three times the number in Japan. In fact, according to the report, the United States, with just 4.6 percent of the world population, accounts for more than 27 percent of all PC use.

PC usage is growing especially rapidly in China, which is expected to surpass Japan in 2007. Currently, there are over 69 million PCs in use in Japan and just under 53 million in use in China. PC usage is also growing strongly in many populous countries such as Brazil, India and Russia.

"Notebook PCs are growing rapidly and now account for 24 percent of total PCs in use and nearly 27 percent in the [United States]," says Dr. Egil Juliussen, author of the report.

More information on the report, which estimates and forecasts the number of PCs in use for 57 countries and the six main regions of the world from 1990 through 2010, call 847-758-3687 or visit www.c-i-a.com.