The calendar displays date and time as soon as the power is given.
Even if there is power failure, the calendar displays the right date and time that it should display , when the power is back .Adding alarm , temperature can be done digital calendar
Calendaring software is software that minimally provides users with an electronic version of a calendar. Additionally, the software may provide an appointment book, address book, and/or contact list. These tools are an extension of many of the features provided by time management software such as desk accessory packages and computer office automation systems. Calendaring is a standard feature of many PDAs, EDAs and smartphones and also of many office suites for personal computers.