ADS数字钟剖析.docVIP

电 子 实 习 报 告 课程设计名称：电 子 实 习 系 别： 三系 学生姓名： 梅哲铭 班 级： 12电子（2）班 学 号： 20120310230 成 绩： 指导教师： 朱慧博 开课时间： 2013-2014 学年第二学期 摘要 ADS 2042数字电子钟采用一只PMOS大规模集成电路LM8560或TMS3450NL、SC8560、CD8560和四位LED显示屏，通过驱动显示屏显示时、分，振荡部分采用了石英晶体作时基信号源，从而保证了走时的精度。具有定时报警功能。它定时调整方便，电路稳定可靠。能耗低，集成电路采用插座插装，制作成功率高。本电路还可扩展成定时控制交流开关（小保姆式）等功能。 　　 ADS 2042数字电子钟也是一种用数字电路技术实现时、分、秒计时的装置，无机械装置，具有更更长的使用寿命，因此得到了广泛的使用。本系统由振荡器、分频器、计数器、译码器、LED显示器和校时电路组成。总体方案设计由主题电路和扩展电路两大部分组成。其中主体电路完成数码显示电子钟的基本功能，扩展电路完成数码显示电子钟的扩展功能，进行了各单元的射界。 关键词：?数字电子钟；LED; 电子钟； Pick to ADS 2042 digital electronic clock USES a PMOS transistor LM8560 large scale integrated circuit or TMS3450NL, SC8560, CD8560 and four LED display, driven by screen display hours, minutes, and USES quartz crystal oscillation parts of time base signal source, thus ensure the accuracy of travel time. Has regular alarm function. Its timing adjustment is convenient, circuit is stable and reliable. Low energy consumption, integrated circuit USES the socket instrumentation, production of high success rate. This circuit can also be extended to timing control ac switch (small nanny), and other functions. ADS 2042 digital electronic clock is also a kind of when using a digital circuit technology, minutes and seconds timing device, no mechanical device, has a longer service life, therefore has been widely used. This system consists of oscillator, frequency divider, the counter, decoder, LED display and a circuit of the school. The overall scheme design is composed of theme and extended circuit of two parts. The main circuit to complete the basic function of digital display electronic clock, extended circuit to complete the expansion of the digital display electronic clock function, has carried on the forms of each unit. Keywords: digital electronic clock;The LED;Electronic clock; 目录 摘要 2 1、总体设计方案 5 2、电源部分电路设计 6 2.1 电源部分电路工作原理 6 2.2 电源部分电路原理图 6 3 时基和显示电路设计 6 3.1时基和显示电路工作原理 6 3.2时基和显示电路原理图 7 4 调时、定时和报警电