本数字钟可实现正常计时，支持12小时和24小时两种计时方式的切换，允许用户手动调时和整点报时功能。

系统对外向用户提供了两个按键:功能键和调整键.功能键用于功能选择,调整键用于相关的时间调整. 当接通电源后系统便开始正常计时，如果按一下功能键，则进入调小时模式,再按一次则进入调分模式,再按则进入12/24小时模式选择设定,再按则恢复到正常计时状态. 在正常计时状态下，用户可以选择12或24小时的计时方式，第六个数码管的右下方小点亮表示是12小时模式，不亮表示24小时。整点报时时，六个数码管的小点会同时亮。

当用户通过按键进入校时状态时，第二个数码管的小点变亮，表示现在在对小时进行设置；同样，进行校分状态时，第四个数码管的小点会亮，表示现在正在对分钟进行设置。

-The digital clock can achieve normal timing, support for 12 hours and 24 hours two timing mode switch allows the user to manually tune and the whole hour. Systems external to provide users with two keys: the function key and adjust the key function keys for function selection and adjustment button for the relevant time to adjust the power system began timing, if you click a function key, adjust the hour mode, and then once for the tone patterns, and then enter 12/24 hour mode select Settings, and then restored to normal timekeeping. in normal time status, the user can select 12 or 24 hours timing sixth of the way, the bottom right of the small digital tube light 12 hour mode, light 24 hours. The whole point of time when the dot of six digital tube light. Button to enter the school when the second digital tube light, that now the hour set　Similarly, when the school sub-state, the fourth digital control points will be bright, said that now are minute set.