以往,人们要随身携带笔记本电脑、移动电话机和无线数据/传真调制解调器卡等设备,才能移动接入Internet。这样,人们购买这些设备需要一笔较大的开支,并且携带和使用也不方便。目前,国际上不少厂商开发出了各种智能手持设备。这类设备体积小巧,只有普通手机大,抑或还要小些,其基本功能包括上网(无线连接Intrnet)和个人 In the past, people had to carry their laptops, cell phones, and wireless data / fax modem cards to keep them connected to the Internet. In this way, people need a large expenditure to buy these devices, and it is inconvenient to carry and use. At present, many international manufacturers have developed a variety of smart handheld devices. Such devices are compact, only the average cell phone is large, or smaller, the basic features include Internet access (wireless connection Intrnet) and individuals