Traditional desktop and notebook computer shipments have suffered the worst year-over-year drop in almost 20 years as consumers shift to mobile devices such as smartphones and tablets, numbers from both IDC and Gartner revealed on Wednesday. The two companies' numbers disagree somewhat on exact amounts, but both believe PC (referring to both Windows and Mac desktop and notebook) shipments have fallen by between 11 and 14 percent in the first quarter of 2013 compared to the same period last year.
