When Apple changed its name from Apple Computer to Apple Inc. they signaled that their business has moved on. We can say it’s to devices or to mobile computing or to the Post-PC era. To understand that this is not a shift driven only by wishful thinking we can plot the change in volumes for the platform-based devices Apple sells.
The stack of products is shown in an increasing level of mobility. At the bottom is the non-portable desktop Mac, above are Mac portables (laptops) followed by the iPad, iPhone and iPod touch. The mobile computers Apple sells are explosively more popular (and important).
To gauge importance consider the following chart which shows the unit values above multiplied by the average price they are able to obtain for a picture of the sales mix.