随着科技的迅速发展,黑匣子的制造技术也在不断进步。上世纪中叶,黑匣子问世之初,只能记录5个参数,误差较大。20世纪70年代,黑匣子开始使用数字记录磁带,能记下100多种参数,保存最后25小时的飞行数据。90年代后,黑匣子中出现了集成电路存贮器,像电脑中的硬盘那样,可记录2小时内的驾驶舱声音和25小时的飞行数据,大大提高了空难分析的准确度。但是,在某些情况下搜寻 With the rapid development of science and technology, black box manufacturing technology is also constantly improving. In the middle of the last century, when the black box came out, only five parameters could be recorded, with large errors. In the 1970s, black boxes began using digital recording tapes, recording more than 100 parameters and saving the last 25 hours of flight data. After the 90s, integrated circuit memory appeared in the black box. Like a hard disk in a computer, cockpit voice and 25-hour flight data were recorded within two hours, greatly improving the accuracy of crash analysis. However, search in some cases