Judgement Day best-seller sold. People around the world come to the cinema. He witnessed the complete destruction of the world, and munch popcorn. There may be a concern, but many do not. Most of them are disappointed not to get tickets.In fact, the less accurate the Day of Judgement is defined as the destruction of the world, the word is derived from the Arabic "Yaum al-Qiyamah," which means the day of resurrection people. No speaker, but I remember the "Day of Judgement," which hit the world with another computer. What is this? Unix Millennium Bug or Y2K38. End of the calendar year of Unix. Derivatives, including which are very popular GNU / Linux. Entering the new millennium, 2000, fear spread of computer system mass chaos. the result of two-digit label, so confusing the computer. T 00, which means 2000 or 1900? Fortunately, everything is beautiful, it sounds like the plane crashed because of the Y2K bug.A similar situation occurs again. Unix developers to save time in 32-bit integer. Beach quite wide, 01 January 1970 to January 19, 2038. Perhaps the main reason is ease of use of integer programming. It is not easy to predict the future. However, Bill Gates never said that in 1981 "640K should be enough for everyone." At the time, 640 K is a revolutionary form of 8-bit computer with 64K of RAM. In fact, at the end of 640 time faster.