1、查看功能：选择此功能是，列出下列三类选择。

1、办公类

2、个人类

3、商务类

当选中某类时，显示出此类所有数据中的姓名和电话号码。

2、增加功能：能输入新数据。

一个结点包括：姓名、电话号码、分类（办公类、个人类、商务类）、电子邮件。例如：杨春13589664454 商务类 chuny@126.com.

当录入了重复的姓名和电话号码时，则提示数据录入重复并取消录入；当通讯录中超过15条信息时，存储空间已满，不能再录入新数据；录入的新数据能按递增的顺序自动进行条目编号。

-1, view the functions: Select this feature is to set out the following three options. 1, office type 2, class 3 individuals, business class when the election in certain types of shows that all of the data in such names and telephone numbers. 2, increasing function: the ability to enter new data. A node includes: name, phone number, classification (office category, the individual category, business class), e-mail. For example: Yang 13,589,664,454 business class chuny@126.com. When the input of the duplicate name and phone number, then the prompt data entry and eliminate duplication of input　when the address book more than 15 information, the storage space is full, can no longer be entry of new data　entry of new data can be automatically sorted in ascending order of entry number.