Although cars are not so necessity and luxurious, most people around the world use it as their first equipment. It needs to take care of, so there won\u27t be any damages. Unfortunately not all people always aware of this. To avoid this destruction we need a tool to remaind the owner so he/she can be more aware of this. Mostly the age of using the vehicle depends on how far the distance which its\u27 reached. This process could be done by using an AT89C52 microcontroller and optocoupler. By converting its rotation into a value of distance, we can predicted when the car will need to be treat. When it\u27s the time for it, so there will be a warning about that in the display. This system is also equipped with clock and memory that can be used to save the data of the treatment that have been done. This Odometer has a 16,6 cm x 11,2 cm x 5,1 cm in dimension, with 273,5 gram of weight and used 12V battery. This equipment can measure distance until 999.999.999,9 km and speed (0 km/h to 250 km/h).
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机译：尽管汽车并不是那么必需和豪华，但世界上大多数人还是将其用作第一设备。它需要照顾，所以不会有任何损坏。不幸的是，并非所有人都意识到这一点。为了避免这种破坏，我们需要一个工具来保留所有者，以便他/她可以对此有所了解。通常，使用车辆的年龄取决于其到达的距离。此过程可以通过使用AT89C52微控制器和光耦合器来完成。通过将旋转数转换为距离值，我们可以预测何时需要治疗汽车。时间到了，所以显示屏上会显示警告。该系统还配备了时钟和存储器，可用于保存已完成的治疗数据。该里程表的尺寸为16.6厘米x 11.2厘米x 5.1厘米，重量为27.5克，并使用了12V电池。该设备可以测量直到999.999.999,9 km的距离和速度（0 km / h至250 km / h）。
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