While only a select few likely expect mobile devices to replace the PC entirely, a new study from the Pew Internet Project found that smartphones are definitely encroaching on the PC's territory.

According to the study, 83 percent of American adults own a mobile phone of some kind. Of those, 42 percent own a smartphone. Of those, 87 percent said they use their smartphone to access the internet or email.

Furthermore, the study found that 25 percent of smartphone owners prefer using their mobile devices rather than the PCs to browse the internet. The report noted that many of these individuals have other means of accessing the internet, but a significant portion don't even have high-speed broadband internet at home.

This by no means indicated the PC is on its way out. Indeed, unless you have very nimble thumbs, it would still be very difficult to type up, say, a 50-page thesis on an iPhone. But it does show how some of the roles of electronics are evolving.

A recent study from Flurry Analytics also highlighted some of the ways people interact with their smartphones. According to the report, smartphone owners spend an average of 81 minutes per day accessing mobile apps and 74 minutes per day browsing the mobile web.