Alarm Clock With Cd Player

Digital clock radios often use a battery backup to maintain the time in the event of a power outage. Without this feature, digital clocks will reset themselves incorrectly (usually to midnight) when power is restored, causing a failure to trigger the alarm. To solve this issue, some digital clock radios trigger the alarm at e.g. 00:01 after a reset to midnight, so that at least the user is able to correct the clock and alarm time. Some other radio clocks (not to be confused with clocks with AM/FM radios) have a feature which sets the time automatically using signals from atomic clock-synced time signal radio stations such as WWV, making the clock ready for use right out of the box.