Starting from digital radio Digital Alarm Clocks that were invented in the 1940s, the Digital Alarm Clock feature has found a world-wide basic importance and is completely universal in its approach. As such, any modern day bedside Digital Alarm Clock has features such as snooze which will reset the alarm to ring after a fixed period of time after the lapse of the original time and also the sleep button which acts as a timer and switches on the radio or mp3 songs at the end of the set period of time.
However, there are modern day advances in the field of Digital Alarm Clocks as well. With the introduction of the alarm in computers, wrist watches, cell phones and other personal electronic devices, these clocks have found a widespread personalization and customization platform. They can now be set to different times on different days, there are also facilities of saving the alarm time so that people simply have to hit a button on their devices in order to activate or de activate it. There are also features which enable users to choose the tone of their alarm bells and these may include a large list of varied sounds in the database of the device and also any music that the user chooses to upload into the device.
Users can also use their computers for alarms. There are several alarm software programs available in the market for PCs which can be used even if the computer is switched off. As long as the power supply is uninterrupted, these programs can switch on the computers and then play the alarm tone at the given time. As such, these advancements have gone a long way in changing the entire image of the Digital Alarm Clock. People can also use their Digital Alarm Clocks in conjunction with their calendars on their devices so that they may be reminded when they have an engagement. As such, these days, people can choose from how much time before the engagement time, the tone is to be issued and also any subsequent alerts that are to be issued. As such, overall, these functions are proving extremely reliable and beneficial to people and so their day to day dependence on these Digital Alarm Clocks is consistently extremely high.
Modern day research into sleep pattern and REM cycles has led to newer theories and techniques that are used to wake up people. It has been aid that traditional methods of the Digital Alarm Clock induced something called as sleep inertia which can induce grogginess and an overall loss of efficiency in the state of mind of the person. As such, progressive alarms are being used these days which make use of slight sounds, simulations of the dawn and also sunrise progressive clocks. These techniques help people wake up in a very smooth yet extremely firm manner without any abrupt and sudden configuration changes.