The iPad held the biggest share of unit sales for any tablet in the United States throughout 2013, while sales of Google Chromebooks made up a bigger percentage of the laptop market compared to Mac notebooks, according to a new report from The NPD Group. The data in the report showed that the iPad accounted for 15.8% of personal computing device sales, which was greater than that of Android tablets at 8.7% and Windows tablets at 2.2%. However, the iPad's share of unit sales in the U.S. this year is down from the year-ago period, where it made up for 17.1% of sales. Sales of both Android tablets and Windows tablets grew by 4.5% and 1.4%, re
