行动计算简介

行动计算简介内容摘要：

to emerge although there is also recognition in the field that in many ways we are already living in an ubip world. • Contemporary devices that lend some support to this latter idea include mobile phones, digital audio players, radiofrequency identification tags, GPS, and interactive whiteboards. Core concept • Mark Weiser proposed three basic forms for ubiquitous system devices, see also Smart device: tabs, pads and boards. – Tabs: wearable centimetre sized devices – Pads: handheld decimetresized devices – Boards: metre sized interactive display devices. Core concept • These three forms proposed by Weiser are characterized by being macrosized, having a planar form and on incorporating visual output displays. • If we relax each of these three characteristics we can expand this range into a much more diverse and potentially more useful range of Ubiquitous Computing devices. Core concept • Hence, three additional forms for ubiquitous systems have been proposed: [4] –Dust: miniaturized devices can be without visual output displays, ., Micro ElectroMechanical Systems (MEMS), ranging from nanometres through micrometers to millimetres. See also Smart dust. Core concept – Skin: fabrics based upon light emitting and conductive polymers, anic puter devices, can be formed into more flexible nonplanar display surfaces and products such as clothes and curtai。