Digital clock H-100 3D model

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Hours based on the calculation of oscillation periods from the master oscillator by means of an electronic circuit and outputting information to a digital display. The oscillation frequency of the master oscillator is stabilized by quartz (see Quartz clock), or as a power supply network (see below). The first wristwatch electronic clock had an LED display, but they could show the time very briefly: LEDs were too gluttonous. Then the properties of liquid crystals were used to orient themselves in an external electric field and to transmit light with one direction of polarization. Being placed between two polarizers, light from an external source was completely absorbed by the system, the polarizer-liquid crystal-polarizer-reflector became dark in the presence of an electric field and formed an image element. As a result, power consumption was significantly reduced, and replacement of batteries is much less frequent. The modern electronic clock is built, as a rule, by a specialized microcontroller, and the watch has many service functions (alarms, melodies, calendars, etc.), but the microcontroller also continues to count the oscillation periods of the same quartz crystal. Note: There are also electronic clocks based on the principle of calculating the periods of the frequency of the mains supply, in many countries there are very stringent requirements for frequency stability, but still, when the load fluctuates, the frequency of the network can change, and the accuracy of such hours can not [ , although for many people it is sufficient. A kind of electronic clock that displays time in binary code is called binary watch. For the display of binary digits, LEDs are usually used. The number of LED groups can be different, they can differ in size and location. Some of the LEDs show the hours, the other - minutes. There may be LEDs responsible for counting seconds, date, etc.