按AN3,依次进入闹钟功能是否启用，闹钟时,分秒,年,月,日及时间时,分,秒//的设置,直到退出设置状态

按AN4,调整是否起用闹钟和调节闹钟时,分,秒,年,月,日,时间的时,分,秒的//数字

LCD第二排中间显示小喇叭，表示启用闹钟功能，无则禁止闹钟功能（可在调//整状态进行设置）

正常状态,LCD上排最前面显示自定义字符,LCD下排最前面闪动"RICHMCU"

设置状态,LCD上排最前面显示"P",下排最前面在设置闹钟时间时显示//"alarm:",其它状态显示"time"

年代变化2000--2099,星期自动转换程序中有自定义字符写-By AN3, in order to enter the alarm function is enabled, the alarm clock, every minute, year, month, day and time, minutes, seconds// set, until the exit status set by AN4, whether the adjustment only use the alarm clock and adjust the hours, minutes, , seconds, year, month, day, time, hours, minutes, seconds// digital LCD display between the second row of small speakers that enable the alarm function, if any, against the alarm function (can be adjusted// set the entire state) normal state, LCD display on the front row of the custom character, LCD front of the lower flashing " RICHMCU"　Set Status, LCD display on the front row " P" , the lower front of the set alarm time is displayed when// " alarm : " , other status display"　time " era of change 2000--2099, week program, automatic conversion to write a custom character