Sales: iDevices v. Macs

via John Gruber. Horace Dediu:

The iOS platform as a whole reached 316 million cumulative units at the end of last year. The iOS platform overtook the OS X platform in under four years and more iOS devices were sold in 2011 (156 million) than all the Macs ever sold (122 million).

The iPhone itself has cumulative sales way more than the Mac, but I wonder how long it will take for the iPad, a more expensive device and a device poised to cannibalize notebooks, to overtake cumulative sales of Macs. It actually might take longer than I think it will because if you look closely at the chart the slope for Mac sales is getting steep toward the end.