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A modern LF radio-controlled clock. A radio clock or radio-controlled clock (RCC), and often colloquially (and incorrectly [1]) referred to as an "atomic clock", is a type of quartz clock or watch that is automatically synchronized to a time code transmitted by a radio transmitter connected to a time standard such as an atomic clock.
This is an accepted version of this page This is the latest accepted revision, reviewed on 23 January 2025. Type of clock A traditional wind-up (key-wound), mechanical spring-powered alarm clock An alarm clock or alarm is a clock that is designed to alert an individual or group of people at a specified time. The primary function of these clocks is to awaken people from their night's sleep or ...
This is the perfect nightstand companion and literally has everything you need at your bedside. This $37 bedside alarm clock has a radio, wireless charger and Bluetooth speaker built in — and it ...
A wristband travel alarm clock was patented in 1908 by the Eterna company. The best-known wristband-type travel alarm clock models were Jaeger-LeCoultre's Memovox in 1950 and Pierce's Duofon in 1955. [8] While the dwellings adapted to the contemporary taste of the society, the technology remained the same for a long time. Only with electronics ...
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Basic digital alarm clock without a radio. The mark in the top-left of the display indicates that the time is 4:00pm (16:00), not 4:00am. A 1969 radio alarm clock (Sony Digimatic 8FC-59W) with an early mechanical-digital display. A digital clock displays the time digitally (i.e. in numerals or other symbols), as opposed to an analogue clock.
A flip clock (also known as a "flap clock") is an electromechanical, digital time keeping device with the time indicated by numbers that are sequentially revealed by a split-flap display. The study, collection and repair of flip clocks is termed horopalettology (from horology – the study and measurement of time and palette – and the Italian ...
A typical DAB digital radio receiver with the Digital Radio Development Bureau DAB digital radio marketing logo. In the United Kingdom, the roll-out of digital radio has been proceeding since engineering test transmissions were started by the BBC in 1990 followed by a public launch in September 1995.