China became the world's largest personal computer market for the first time on an annual basis last year amid weaker global demand, a research firm said, adding that the nation is likely to retain the position in the coming years.

The nation's PC shipments in 2012 hit 69 million units, surpassing the United States, which had annual shipments of 66 million, according to IHS iSuppli.

China's PC market is projected to grow 3 to 4 percent this year, it added.