它们可以管理老年人的日常生活、提醒他们按时吃药。它们还可以用作通讯工具，为用户提供无线语音和视频连接，与远方的朋友和家人进行交流。
Additionally, they could serve as communication tools, providing wireless voice and video links to distant friends and family members.
20世纪成都话经历了老年、中年和青少年三代人的语音变化。
The 20th century witnesses phonetic changes in Chengdu dialect of three generations of the aged, the middle aged and the adolescent.
功能定位：本设计主要通过听觉补偿，把文字转化为语音信息，方便中老年人的阅读、学习；
Functions: the design mainly through compensation, taking the text into the voice message, to facilitate the elderly to read, study;
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