the hour

The 24-hour system was a time recording system that divided a day from midnight to midnight into 24 hours, from 0 to 23 (24 was the midnight at the end of the day). It originated in ancient Egypt, where the Egyptians divided time into 12 hours during the day and 12 hours at night (or 10 hours between sunrise and sunset, 1 hour each at dawn and dusk, and 12 hours at night). At that time, people realized that the length of an hour changed with the seasons. In the 24-hour format, the time is written in the format of "hours: minutes"(for example, 01:23) or "hours: minutes: seconds"(01:23:45), with zeros in front of numbers less than 10 (although it is not necessary in the hour part, it is widely used in computer applications such as the 8601 standard). In an environment where the precision was higher than seconds, the seconds could be expressed in decimals. A day starts at midnight (12:00 or 24:00), and the last minute of each day starts at 23:59 and ends at 24:00. 24:00 on a certain day is equivalent to 00:00 on the next day, and the digital clock displays from 00:00 to 23:59. The establishment of this epoch system benefited from the process of global integration, and it expanded around the world along with the expansion of capitalists. It provided a reference for global synchronization activities and had an important impact on the global economy, politics, and culture. "Little Fox Fairy" is equally exciting. Everyone is welcome to click and read it!

The god of value could be related to the day or the hour. From the point of view of the day, there was a god on duty every 360 days a year to monitor the affairs of ghosts and gods in the human world, just like a god on duty every day. There were also different gods on duty every day of the year, and the good or bad luck of the day was determined by the interaction of the gods on duty. From the point of view of the hour, different hours also had different good or bad luck judgments related to the value of the gods. For example, on February 19, 2021, different hours had different good or bad luck judgments. The good or bad luck between 23:00 and 1:00 was the heavenly prison (bad), and the bad luck between 1:00 and 3:00 was the Xuanwu (bad). "Shen Mingri" is equally exciting. Everyone is welcome to click and read it!

There are many types of 24-hour timers. The following are some common ones: - Cycle timing chip: For example, EH4A02 - 3E69 - 2BPE cycle timing chip, the power supply method is DC3.7V18650 battery, and two output channels (one indicator light and one motor) are controlled by two touch buttons. It has a variety of working modes. For example, after the motor has been working for a certain period of time, it can be operated again after 23 hours and 58 minutes (or 23 hours and 55 minutes) of standby, achieving a 24-hour cycle. - Mechanical models: For example, a mechanical timer for children. It doesn't need to be installed with batteries and is easy to operate. It can be used to count time with a twist. It has a visual function and will automatically ring when the time is up. It is suitable for children to use and can help change the habit of dragging. - Electronic timers: There are many kinds, such as a 24-hour countdown timer with a clock, a sound switch, a silent flashing light reminder, a beauty salon timer, a foreign trade kitchen timer (Chinese and English 24-hour electronic timer digital reminder), etc., the price is different. - Hongrun timer/timer: Fully automatic chip packaging technology, strong anti-interference ability, six LED digital display and wide display range, with a variety of output functions, timing function with button start, stop, reset function, and an external button. - Timers in Codesys: There are TN (timer on, start delay timer), TOF (timer off, turn off delay timer), and TN (pulse timer, pulse delay timer) types. Different timing functions are realized through pins such as IN, PM, Q, and ET. The setting value and used time are in time format (in ms). The novel "The Name Engraved in the Stars of Destiny" is equally exciting. Everyone is welcome to click and read it!