diff --git a/model/时序图/(7)管理用户信息.jpg b/model/时序图/(7)管理用户信息.jpg new file mode 100644 index 0000000..0f5628a Binary files /dev/null and b/model/时序图/(7)管理用户信息.jpg differ diff --git a/model/时序图/(8)更新公告栏.jpg b/model/时序图/(8)更新公告栏.jpg new file mode 100644 index 0000000..d594d1b Binary files /dev/null and b/model/时序图/(8)更新公告栏.jpg differ diff --git a/model/时序图/(9)修改校车时刻表.jpg b/model/时序图/(9)修改校车时刻表.jpg new file mode 100644 index 0000000..b083296 Binary files /dev/null and b/model/时序图/(9)修改校车时刻表.jpg differ