Worldwide computer sales should contract by 10 percent or more in 2013, according to newly released data from IDC, making it the most severe annual sales dip on record. The drop is attributed to declining desktop and laptop computer sales. Although personal computers are still the primary device accessed by users for productivity tasks, devices such as tablets and phones are eroding the market. The market research firm also finds Windows tablets should increase to 10.2 percent of the market by 2017, but will still not approach sales of those tablets based on Google’s Android (58.8 percent) or Apple’s iOS (30.6 percent) operating systems. (eWeek)(PC World)(PC Mag)(IDC)