20世纪末,电子技术获得了飞速的发展,在其推动下,现代电子产品几乎渗透了社会的各个领域,有力地推动了社会生产力的发展和社会信息化程度的提高,同时也使现代电子产品性能进一步提高,产品更新换代的节奏也越来越快。时间对人们来说总是那么宝贵,工作的忙碌性和繁杂性容易使人忘记当前的时间。忘记了要做的事情,当事情不是很重要的时候,这种遗忘无伤大雅。但是,一旦重要事情,一时的耽误可能酿成大祸。例如,许多火灾都是由于人们一时忘记了关闭煤气或是忘记充电时间等造成的。而钟表的数字化给人们生产生活带来了极大的方便。数字钟是通过数字电路实现时,分,秒数字显示的计时装置,广泛用于个人家庭、车站、码头办公室等公共场所,成为人们日常生活中不可少的必需品。由于数字集成电路的发展和石英晶体振荡器的广泛应用,使得数字钟的精度,远远超过老式钟表,钟表的数字化给人们生产生活带来了极大的方便,而且大大地扩展了钟表原先的报时功能,诸如定时自动报警、按时自铃、时间程序自动控制、定时广播、自动起闭路灯、定时开关烤箱、通断动力设备、甚至各种定时电气的自动启用等。所有这些,都是以钟表数字化为基础的。因此,研究数字钟及扩大其应用,有着非常现实的意义。
Multi-function digital electronic clock design
At the end of twentieth Century, electronic technology has obtained the rapid development, under its impetus, the modern electronic products into almost every field of the society, a strong impetus to the development of social productivity and the improvement of social information-based degree, simultaneously also makes the modern electronic products to further improve the performance, product upgrading have e increasingly fast pace. The time to the people said always so precious, busy plex nature of the work is easy to make one forget the current time. Forget to do, when something is not important, the forgotten not hurt the important essentials. But, once the important matter, a momentary delay may lead to disaster. For example, many fires are caused by people forgot to turn off the gas or forgets the duration of charging damage. The digital clocks to the production and life of the people has brought great convenience. Digital clock is implemented by digital circuit, points, a timing device seconds digital display, widely used in personal family, station, wharf and public places such as office, e an indispensable necessity in daily life. Due to the wide application and development of digital integrated circuits and quartz crystal oscillator, making digital clock precision, far more than the old clock, digital clocks to the production and life of the people has brought great convenience, but also greatly expanded the cl
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