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PC sales are the strongest in six years, as the booming economy pushes up demand for computers. Maria Armental reports for The Wall Street Journal:

Personal-computer shipments in the second quarter had the strongest showing in six years, driven by stronger demand from business customers, according to preliminary data from two research firms.

Based on Gartner Inc. IT 0.47% data, it was the first year-to-year increase since the first quarter of 2012. According to International Data Corp. data, it was the strongest rate of growth since that quarter.

While both firms track sell-in numbers—units shipped to companies’ warehouses—rather than direct sales to consumers, much of the difference in their data comes from how each firm defines PCs. Gartner excludes Chromebooks from calculations but includes so-called ultramobile premiums, such as Microsoft Surface, which IDC excludes.

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