An employee carries out quality control checks on a completed Raspberry Pi single-board computer on the production line at Sony Corp.'s technology centre in Pencoed, U.K., on Monday Dec. 16, 2013. Raspberry Pi, a low-cost computer designed primarily for children, was developed in the computer laboratory of the University of Cambridge. Photographer: Simon Dawson/Bloomberg via Getty Images

An employee carries out quality control checks on a completed Raspberry Pi single-board computer on the production line at Sony Corp.'s technology centre in Pencoed, U.K., on Monday Dec. 16, 2013. Raspberry Pi, a low-cost computer designed primarily for children, was developed in the computer laboratory of the University of Cambridge. Photographer: Simon Dawson/Bloomberg via Getty Images