By the early 1980s, the BBC notes that Japan began concentration on further development of digital timepieces. Digital watches could display the time and date by this time – also stopwatch features were becoming popular. Smaller digital alarm clocks became common. Powered by electricity, they were usually reliable except for one problem: when the power went out, even for a second, the clocks would reset themselves. Clocks with a backup battery source were later introduced on the market. According to Wikipedia, digital clocks became standard in automobiles during the 1980s. Before this time, the standard was a circular or square-shaped analog clock with unnumbered markings indicating the 12 points on a traditional clock face. Digital display clocks today are far more advanced, with more elaborate models able to display temperature, the date and more defined fragments of time. Some special types of clocks, such as Atomic Clocks, also commonly use digital displays.
Many early clock patents describe a Geneva gear mechanism, which is described as a turning wheel with leaf plates used to display the time. The wheel was powered by a crystal oscillator. One downfall of the Geneva gear was that it could only have a ratio of 12 to 1; the leaves could not be segmented into 1 and 10-minute intervals. This would require 60 leaves to be put on a wheel, which would be impossible for the small compact clock design that was desired for digital clocks.
By the early 1980s, the BBC notes that Japan began concentration on further development of digital timepieces. Digital watches could display the time and date by this time – also stopwatch features were becoming popular. Smaller digital alarm clocks became common. Powered by electricity, they were usually reliable except for one problem: when the power went out, even for a second, the clocks would reset themselves. Clocks with a backup battery source were later introduced on the market. According to Wikipedia, digital clocks became standard in automobiles during the 1980s. Before this time, the standard was a circular or square-shaped analog clock with unnumbered markings indicating the 12 points on a traditional clock face. Digital display clocks today are far more advanced, with more elaborate models able to display temperature, the date and more defined fragments of time. Some special types of clocks, such as Atomic Clocks, also commonly use digital displays.Many early clock patents describe a Geneva gear mechanism, which is described as a turning wheel with leaf plates used to display the time. The wheel was powered by a crystal oscillator. One downfall of the Geneva gear was that it could only have a ratio of 12 to 1; the leaves could not be segmented into 1 and 10-minute intervals. This would require 60 leaves to be put on a wheel, which would be impossible for the small compact clock design that was desired for digital clocks.
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