What is the most important digital device?

Digital devices have been part of technological innovations and have greatly influenced people. They have also meant a breakthrough for many countries that distribute these devices in large quantities. Among the most important digital devices are: the tablet, the cell phone, the desktop PC and the laptop, among others. For you, which is the most important and influential digital device?

Daniel Novoa wrote:Digital devices have been part of technological innovations and have greatly influenced people. They have also meant a breakthrough for many countries that distribute these devices in large quantities. Among the most important digital devices are: the tablet, the cell phone, the desktop PC and the laptop, among others. For you, which is the most important and influential digital device?

Dear Daniel, based on human activities nowadays, I think that he most convenient and popular device nowadays is the tablet, since it is used often for working purposes and it can be adequate for different activities which are either for entertainment, or for working and education purposes.