Industry tracker IDC trimmed both its tablet and PC forecasts on Wednesday, citing broad market declines, large inventory of notebooks and slower-than-expected adoption of Microsoft Corp.'s Windows 10 operating system. IDC now expects worldwide PC growth to fall by nearly 9% in 2015 and "not stabilize until 2017," which would mark five straight years of deceleration. It expects the commercial market to lead a broader PC recovery starting in 2017, but expects volume declines within the consumer sector to continue through 2019. Separately, IDC forecast a bigger-than-expected deceleration in tablet sales of 8% in 2015, compared with its previous outlook of a 4% decline. Both Apple Inc.'s iOS and Microsoft's Windows are expected to gain market share over the next few years, while Google Inc.'s is expected to decline slightly, according to IDC.
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