Question

论文摘要英文翻译

本系统采用石英晶体振荡器、分频器、计数器、显示器和校时电路组成。由LED数码管来显示译码器所输出的信号。采用了74LS系列中小规模集成芯片。总体方案设计由主体电路和扩展电路两大部分组成。其中主体电路完成数字钟的基本功能,扩展电路完成数字钟的扩展功能。

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。尤其在医院，每次护士都会给病人作皮试，测试病人是否对药物过敏。注射后，一般等待5分钟，一旦超时，所作的皮试试验就会无效。手表当然是一个好的选择，但是，随着接受皮试的人数增加，到底是哪个人的皮试到时间却难以判断。所以，要制作一个定时系统。随时提醒这些容易忘记时间的人。  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、按时自动打铃、时间程序自动控制、定时广播、定时启闭电路、定时开关烘箱、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。

Answer 1

This system uses the quartz crystal oscillator, the frequency divider,the counter, the monitor and the timing electric circuit composition.By the LED numerical code tube demonstrated the decoder outputssignal. Has used in the 74LS series the small scale integration chip.The overall plan design two major part is composed by the main bodyelectric circuit and the expander. Main body electric circuitcompletes the digital clock the basic function, the expander completesthe digital clock the expansion function. 20 century's ends, the electronic technology has obtained the rapiddevelopment, under its impetus, the modern electronic products nearlyseeped society's each domain, powerfully impelled the socialproductive forces development and the social information degreeenhancement, simultaneously also makes the modern electronic productsperformance further to enhance, the product renewal rhythm more andmore is also quick. The time to the people said always that precious,the work bustles about the nature and numerous and diverse is easy tomake one forget the current time. Had forgotten must do matter, whenthe matter is not is very important, this kind forgets does not hurtthe essentials. But, once the important matter, the for a while delaypossibly breeds the big calamity. For example, many fires all arebecause the people had forgotten for a while the closure coal gasperhaps forgets the duration of charging. Especially in the hospital,each time the nurse can make the skin to the patient to try, to testthe patient whether to drug allergy. After the injection, generallywaits for 5 minutes, once the overtime, does the skin tries to examinecan be invalid. The wristwatch certainly is a good choice, but, alongwith accepts Pi Shi the population increase, is which person's PiShidao does the time actually with difficulty judge. Therefore, mustmanufacture to be fixed time systematic. Reminds the person asnecessary which these is easy to forget the time. The clock and watchdigitization produced the life for the people to bring enormousconvenient, moreover greatly expanded the clock and watch originallyto report time the function. Such as fixed time auto-alarm, on timeautomatically hits the bell, the time sequencing automatic control,fixed time broadcasts, fixed time opens the closed circuit, the timecut-out drying oven, passes breaks the power equipment, even each kindof fixed time electricity automatically begins using and so on, allthese, all are changes into the foundation by the clock and watchnumeral. Therefore, the research numeral clock and expands itsapplication, has the extremely realistic significance.