相片浏览，转换，附加日期，操作目录，添加附加信息等-Photo browsing, conversion, additional dates, operating directory, add additional information, etc.

万年历，输入年份可以打出该年日历，输入年份月份可以打出该月日历，输入两个日期可以打印其天数差-Calendar, enter the calendar year can play, enter the year you can play the month calendar month, enter the two dates can print the number of days difference