本科毕业论文-银行排队机系统设计（终稿）.doc

河北联合大学课程设计 题 目：银行排队机系统 姓 名： 学 院： 信息学院 班 级： 07电科1 学 号： 200712010124 指导教师： 闫晓东 2011年 01月06日一、二、 需求分析排队在日常生活中已经是一种很普遍的现象，随着科技的发展，排队系统应用而生。排队叫号机是利用电脑的科学管理功能代替人为排队系统，很好地解决了客户在服务机构办理业务时所遇到的各种排队、拥挤和混乱现象，为客户办理业务带来莫大的方便和愉悦。根据课程设计的要求，基本确定应用单片机来确定简单的排队叫号机功能。1、基于总体的考虑，首先对排队机进行分析。排队系统可以分为两大部分。票务打印系统及窗口操作系统，为此首先需要设置一个总控制系统对它们进行控制。2、票务打印系统（1）显示发号机上的显示屏使用液晶显示，显示对待办业务的选择；（2）输入输入过程即通过触摸屏对业务进行选择的过程；（3）输出打印号票打印内容应该包括业务名称、排队号码，打印机选用指针式打印机；3、窗口操作系统基本包括显示屏、语言提示，叫号按钮（1）显示屏 使用点阵式LED显示，显示内容应该是下一个号码以及办理窗口；（2）语音提示语音播报时用语音的形式通过广播或者音箱给人一提示信息。语音播报提示给人直观、亲切的感受特点，而且不需要用户一直盯着提示屏或者排队情况。选择使用语音芯片，实现的功能应该是当操作员按下按钮后，语音播放下一个办理者的票号。（3）叫号按钮设置叫号按钮，以便于操作员控制窗口模块的显示屏及语音提示。4、各个模块的通信问题考虑通信距离为几十米的范围内，而且需要高有效的抗噪能力，选用目前广为应用的RS485总线相连，互相通信，传送数据。二、 概要设计（一） 根据排队系统的实际情况，排队系统的基本流程如下：休息区的顾客收到提示信息后前去相应窗口接受一对一服务需要办理业务的顾客先到取号机根据自己需要选择业务，并获得打印出的排队号票取到排队号的顾客在休息区休息，注意大厅的提示信息窗口操作员按“下一位”当前窗口便显示顾客排队号同时开始语音播报：请XX到XX窗口服务顾客取票顾客休息等待顾客到窗口办理业务营业员按钮叫号排队机排队流程（二）系统设计方案如下：1、整个系统由一台主控器与多台子控制器通过485总线相连，互相通信，传送数据。主控制器接收子控制器的请求信息，对子控制器的请求作出应答。通信总控制器子控制器子控制器通信系统框架图2、窗口操作子系统显示屏子控制器窗口一窗口二窗口三键盘输入模块语音叫号显示屏语音叫号显示屏语音叫号窗口控制系统功能结构图（1） 子控制器包括一个管理员键盘和多个窗口操作键盘，每个每个窗口操作键盘课通过硬件来设定、更改其所在窗口的窗口号。管理员键盘实现系统设置的功能，可以配置整个系统的密码，系统时间，业务类型等一系列参数；窗口操作键盘可以向主控制器发出“下一位”来呼叫下一位顾客。同时，对于某些特殊情况要进行处理，例如某些紧急客户排队需要优先处理、顾客没有听到叫号的信息或者操作员暂时离开窗口，所以操作键盘需要能提供“优先”、“重呼”、“暂停”等信息处理功能。（2）整个系统中需要一个显示牌来指示当前顾客应该到达某个串口办理；同时每个窗口需要配置一台相应的显示牌，可以显示当前窗口办理的顾客号，以便提醒顾客前来办理业务。（3）为了更直观的提醒顾客，系统中还设置一个语音叫号控制单元，实时通过音箱播报顾客号和相应窗口号来提醒顾客办理业务。3、票号打印子系统主控制器连接业务取号机的业务选择键盘，用来接收顾客的按键信息与排队请求信号。同时，还连接微型打印机，在接收到排队请求信号后，依照当前的排队情况，产生排队号，并控制打印机的打印。打印机电路显示屏触摸屏输入复位电路主控制器票号打印系统框图三、详细设计（一）硬件设计1、主控制器设计基于成本控制和功能不需要很复杂的考虑，主控器选用单片机来实现。主控器即为RS485网络中的主机，起着网络服务器的作用，把RS485网络上的多个CPU控制节点通过总线连接起来，构成一个完整的通信网络系统，作为该排队系统的主要控制单元，它的设计需要达到以下几个要求：（1） 能够顺利的与其他CPU控制器通过RS485总线相连，组成可以相互通信、多CPU协同控制的网络；（2） 具有基本的人机交互界面，可以接受顾客排队请求的信息输入；（3） 具有较大的数据存储单元，以存储顾客排队信息，生成排队号等；（4） 能驱动打印机，由打印机打印出有相关信息的排队票号；（5） 具有系统时钟，记录当前系统时间，需要万年历功能；（6） 能与PC机通信，传递取号、叫号等信息。打印机控制模块RAMCPU系统时钟控制模块 串口0 串口1语音芯片 PC语音模块i打印485总线主控制板模块设计图从主控器的设计要求可以看出，由于与各个子控制器采用RS485网络，使用的是RS485协议；而与PC机通信采用的是RS232协议，所以主控制器可以使用两套串口分别来连接RS485网络以及和PC机通信：扩展一个较大容量的带电池RAM可以在掉电情况下不丢失数据；配置一块带万年历功能的时钟芯片，可以记录完整系统时间。 在设计中，主控器的核心单元CPU采用winbond公司的一个带双串口与MCS-51单片机相兼容的全新核心的微处理器W77E58，处理能力强，具有两个全双工串口免去扩展和兼容的麻烦，而且片内程序存储器大，就该系统的程序来说已经足够，不用扩展片外程序存储器，节省了I/O口；排队信息数据存储方面，由于要在掉电的情况下保持大量的数据，所以选用了一块32K容量、带电池数据存储器扩展；万年历时钟芯片选择了功能强大，方便易用的DS12C887，十分方便控制，断电情况下也能准确运行。2、子控制器设计 子控制器在系统的应用中实际是一个与客户交互的终端。人机界面选用键盘和显示屏来实现，本系统采用的方案是常用16键键盘和LCD段式液晶模块组成人机界面，加入通信模块，与主控制器通过RS485网络交互，将用户的输入信息传递给主机，经过主机的处理后，再将结果反馈到子控制器需要满足以下几个要求：LED液晶显示模块CPU 485网络模块地址设置模块键盘输入模块子控制器模块示意图RS485总线（1） 子控制器应该能够顺利的与其他CPU控制器通过RS485总线相连，组成可以相互通信，多CPU协同控制的网络；（2） 子控制器是一个键盘式客户交互终端，应尽量做到操作简便，符合人们使用习惯，同时提示信息简洁而充分；（3） 由于子控制器在同一个网络中会有多个同时接入，所以要具有设置功能以区分不同CPU控制器；（4） 子控制器实际上是键盘，最终需要装入键盘外壳，所以应尽量做到小巧美观，设计的电路应该能适应键盘外壳的尺寸。在设计中，CPU采用AT89S51；LED液晶模块采用北京青云科技公司的LCM061A段式液晶模块；键盘采用典型的44矩阵键盘，尽管有简单易用的键盘显示芯片8279可以起到键盘扫描和LED断码现实的功能，但是由于键盘尺寸的限制，必须尽量少用芯片以节省空间，所以这里用AT89S51的P2口作为键盘接口电路，用程序来扫描键盘输入。3、窗口操作子系统（1）、键盘显示模块本系统显示模块采用段式LCD液晶显示模块LCM061A，它是一种6位多功能通用型8段式液晶显示，将液晶显示屏和核心电路集成一体，使用串行式控制，它只有11根引脚，与单片机连接十分方便。引脚如表1所示： 引脚符号说明1VDD电源正极，+5V2VLCDLCD屏工作电压调整，可调整视角对比度7/CS模块片选8/RD数据读取线9/WR数据写入线10DATA数据传输线，输入输出双向11VSS电源负极，接地 LCM061A LCD显示模块采用串行控制方式，全部的功能都通过编程对/CS、/RD、/WR、DATA几个引脚的控制完成，而其中所有的控制指令和数据都通过DATA数据传输读写。 LCM061A采用串行式的控制方法，键盘显示接口电路如下图键盘显示接口电路LCM061A的VLCD端经过一个50K的可调电阻接5V电源正极，可以通过调节这个电阻的阻值来调节LCD的显示对比度。P1.0P1.3分别与/CS、/RD、/WR、/DATA相连，P2口连接44的矩阵键盘，其电路如下图所示：键盘接口电路（2）语音播报模块语音播报时用语音的形式通过广播或者音箱给人一提示信息。语音播报提示给人直观、亲切的感受特点，而且不需要用户一直盯着提示屏或者排队情况。本系统选用以下芯片。ISD2560语音芯片 ISD2560是一种永久记忆型的语音录放集成芯片，具有抗断电，音质好，使用方便等优点。它的最大特点在于片内E2PROM容量为480K，所以录放时间长，最长可达60秒，而且录音的采样值直接存放在E2PROM中，省去了A/D和D/A转换器。有10个地址输入端，寻址能力可达1024位，最多能分600段。设有OVF(溢出)端，便于多个器件级联。内部还有前置放大器、内部时钟、定时器、采样时钟、滤波器、自动增益控制、逻辑控制、模拟收发器、解码器等。ISD2560的引脚排列如图所示，各引脚的功能如表所示： 语音播报模块硬件电路设计AT89s51的P2接口连接ISD2560DE A0A7、P1.1脚接A8地址线、A9接地，始终使用地址模式，可以寻址000h1Efh。P1.2接CE、P1.3接P/R，可以用这两个引脚来控制ISD2560播放录音的开始与停止。P1.4连接EOM端，用来检测每一段语音的结束。XCLD接地，表示不使用外部时钟。作为一个单独的CPU控制板，除了一个CPU以外，还需要一个RS-485通信模块用来与其他CPU通信，图中连接了MAX487芯片与RS-485总线相连。语音模块接口电路在按钮模式下，ISD2560可以通过在A0A7上接不同高低电平的组合来设定录/放地址，CE、PD、PR和地之间介入按钮，通过按钮来控制语音录放的开始和停止。（3）窗口操作系统总电路图窗口操作系统总电路图4、 票务打印子系统 （1）系统时钟模块系统时钟是整个排队序列的重要指针，不仅要把排队时间信息显示在每张排队号上，而且要记录不同时间发生的时间，以时间有关的功能。DSI2C887芯片具有微功耗，外围接口简单，精度高，工作稳定可靠等优点，可广泛用于各种需要较高精度的时时鈡场合其管脚排列如图所示MOT：计算机总线选择端；DSI2C887管脚图SQW：方波输出，速率和是否输出有专用寄存器A，B的预制参数决定；AD0-AD7：地址数据（双向）总线，由AS的下降沿锁存8位地址；R/W：读/写数据； AS：地址锁存信号端；DS：数据信号端； CS：选通信号端，低电平有效；IRQ：申请中断，由专用寄存器决定； RESET：复位器；DS12C887内部存储器的功能CPU通过读DS122C887的内部时钟寄存器得到当前的时间和日历，也可通过选择二进制码或BCD码初始化芯片的11个时钟寄存器。其113Byte非易失性静态RAM可供用户使用，对于没有RAM的单片机应用系统，可在主机掉电时保存一些重要的数据。 接口电路如图中所示，片选地址CS=80XXH。DS12C887的IRQ接W77E58的INT1，用来处理每天凌晨时的中短信息系统时钟接口电路（2）票号打印模块 本系统选用上海博施BS热敏打印机，提供了打印驱动电路和标准25针打印接口。下图为排队票号打印模块的电路。单片机的P1.0口提供数据选通信号，它与打印机STB端连接，将打印数据送打印机的选通控制。单片机的P1.1口接打印机的BUSY端，以BUSY信号作为打印机“忙”或“闲”状态查询信号。扩展的8255的PA口与打印机的八位数据线相连，传送打印数据。单片机的P1.7口与8225的CS端相连，P0.0、P0.1经过74LS373锁存后分别与8255的A0、A1相连。因此单片机向打印机传送的口地址为7000H。打印机模块电路（3）地址设置模块本系统网络中，各CPU控制器均有各自的地址以相互区别。在子机中增加一个地址设置模块，通过从硬件上手动设置不同的地址来区别，其电路如下图所示：地址设置电路（4）LED显示功能设计 排队系统中，除了语音系统外，还有更直观的大LED数码管显示屏提示，即不同业务窗口上方会显示排队队列中轮到并可以服务的客户排队号。两种提示方式相辅相成，尽可能的满足不同客户的需要和习惯。方案选择 由于LED显示屏与窗口配套的，一个窗口对应一个LED显示屏，所以在本RS-485网络系统中，LED显示屏也是多个的，因此，本系统也将每个显示屏设计为独立的CPU控制器，作为RS-485网络上的一个子控制器来看待。这样不仅减轻了CPU的处理负担，而且还能为排队系统这个需要适应使用空间的网络设备提供了更为灵活的安装方式。电路设计 LED显示是目前比较常见的一种应用，其原理和技术已经相当成熟，本系统LED显示功能模块采用的就是以AT89S51作为控制COU，用8255扩展足够的I/O口，2003反向驱动，由于本排队系统只需要显示排队号和窗口号，所以只需接七段码译码器4543译出显示0-9各个数字的七段码十分方便如图所示所不同的地方就只有两点，一是本LED显示屏是网络上的一台子控制器，需要加入RS-485通信接口，而且需要处理网络上传来的显示信息；二是需要配备一个地址选择功能，以设定不同的地址，与网络上其他子控制器相互区别。将8255的PC口接一个8位的拨码开关，安装网络时，手动设置拨码开关的开与关，由8255的PC口读入高低电平的组合，作为这个子控制器的地址。LED显示板电路（5）RS-485通信模块 RS-485通信模块是整个派对系统中各CPU控制器相互通信的关键，每个CPU控制器上都应该设置这样的通信模块，接收主机传来的消息或者发送子机处理好的消息。 各个CPU控制器上的通信模块电路是一样的，而且通信程序都遵守统一的通信协议。 RO、DI分别接单片机的串口RXD、TXD，RE、DE是接收发送是能端，RE低电平时接收、DE高电平时发送。用P1.0来控制485的发送和接收。A、B接入RS-485总线，要注意所有的485芯片A接A、B接B,不能反接。语音模块接口电路（二） 各模块软件设计1、 系统总体软件运行流程图系统总体软件运行流程图2、键盘显示模块 键盘设计过程流程图本设计所采用的菜单是多步显示内容主要有如下几个：（1） 菜单提示符：根据菜单的特性，我们用“11”、“12”、等来表示不同的菜单如图3-5中的a所示。（2） 输入提示符：可以把要输入的内容统一采用四个数字的形式输入，采用4个8字中间的短横来表示，例如图3-5中的b所示，此时“PS”代表“password”即提示用户输入密码。（3） 错误提示符：当用户输入数字不合理时，LCD上需要显示错误提示这里可以显示“Error”，如图3-5中的c所示虽然8段字符能显示的字符十分有限但是仍能够用不同的段组合来表示大多数字母，只是有的是大写。根据段的地址可以定义一个段码表，以便编程时直接调用，如：3系统时钟模块（1）DS122C887内部RAM和各专用寄存器地址分布如表3-2所示：（2） 软件设计 DS12C887状态寄存器的参数设置如下;状态寄存器，它表示采用的时钟频率为32.678KHz状态寄存器B设置为22H，它表示允许报警中断，禁止其他中断，置24小时模式，时标寄存器内容用BCD码表示（1） 初始化 初始化时，首先应禁止芯片内部的更新周期操作，所以先将寄存器B中的SET位置1，然后初始化，状态寄存器A，此后再通过读状态寄存器C，清除寄存器C中的中断标志位PF，报警中断标志位AF，更新周期结束标志UF，最后将状态寄存器B中的SET位置0，芯片开始工作。（2） 时间中断 共有三个闹钟单元，分别为时、分、秒，在其中写入闹钟时间并且在时钟中断允许下每天到此刻产生中断，但控制系统要求的定时间隔，不是整数时，则通过软件调整来实现（3） 读取时间 处于正常工作时，每秒将产生一个时标更新周期。4语音播报模块软件设计（1） 语音段表 对于本系统所用的语音片段有一大部分是0、1、2、3等这样的数字，所以可以将表码与语音的内容对应起来如表3-4主控制器将处理好的语音播报信息及排队号和窗口号，按照设定的协议通过485网络传送给语音播报控制器，语音播报控制器接收这些数据，还原处可以处理的播报信息，然后ISD2560寻址读取录好的一个个语音片段，组合成一句完整的提示信息，播报出来先将从主控制器接受到并转换好的排队号呵窗口组合成完整的叫号提示信息，把他们的语音段地址码存入缓冲区LEN，然后按着特定的顺序一一播报，程序流程如图所示：用计数器n 来指示语音段被一一播报完毕，播报每一段时让CE端产生一个低电平脉冲，然后循环等待P1.4变化，当他变低时，及播报完每一段语音段，这样循环LEN，直至包含LEN语音段的一句完整的提示语音播报完毕。请您删除一下内容，O(_)O谢谢！Many people have the same mixed feelings when planning a trip during Golden Week. With heaps of time, the seven-day Chinese请您删除一下内容，O(_)O谢谢！National Day holiday could be the best occasion to enjoy a destination. However, it can also be the easiest way to ruin how you feel about a place and you may become more fatigued after the holiday, due to battling the large crowds. During peak season, a dream about a place can turn to nightmare without careful planning, especially if you travel with children and older people. As most Chinese people will take the holiday to visit domestic tourist destinations, crowds and busy traffic are inevitable at most places. Also to be expected are increasing transport and accommodation prices, with the possibility that there will be no rooms available. It is also common that youllwait in the line for one hour to get a ticket, and another two hours at the site, to only see a tiny bit of the place due to the crowds. Last year, 428 million tourists traveled in China over the week-long holiday in October. Traveling during this period is a matter that needs thorough preparation. If you are short on time to plan the upcoming Golden Week it may not be a bad idea to avoid some of the most crowded places for now. There is always a place so fascinating that everyone yearns for. Arxan is a place like this. The beauty of Arxan is everlasting regardless of the changing of four seasons. Bestowed by nature, its spectacular seasonal landscape and mountains are just beyond word. Arxan is a crucial destination for the recommended travelling route, China Inner Mongolia Arxan Hailar Manzhouli. It is also the joint of the four prairies across the Sino-Mongolian border, where people gravitate towards the exotic atmosphere mixed with Chinese, Russian, and Mongolia elements. As a historic site for the Yitian Battle, Arxan still embodies the spirit of Genghis Khan. Walking into Arxan, you will be amazed by a kaleidoscope of gorgeous colors all the year round - the Spring azaleas blooming red in the snow, the Summer sea wavering blue in the breeze, the Autumn leaves painted in yellow covering volcanic traces, and the Winter woods shining white on the vast alpine snowscape. Hinggan League Arxan city is situated in the far eastern area of Inner Mongolia Autonomous Region. Its full name Haren Arxan means hot holy water in the Mongolian language. Arxan is a tourism city in the northern frontier with a blend of large forest, grand prairies, vast snowfield, heaven lake cluster, thermium, as well as volcanic cluster. It is a rare and unique ecotourism base filled with healthy sunshine, clean air and unspoiled green. Nestled close to the countrys largest virgin forest, and known for its spring and ecological environment, Arxan is marveled at by many tourists as the purest land on earth. You cannot miss out the Autumn of Arxan. It is definitely the best with brightly-colored scenery full of emotions. Autumn in the northern part of the country comes earlier than the South. A September rain followed by the footprints of Autumn brings more colors to the once emerald green mountain and blooming grassland. Shutterbugs flock to see for themselves the marvel of splendid colors around the mountains and waters, many of whom have travel a long distance and even camp here only to capture a moment of the nature wonder. The silver birch turns golden, while the larch is still proudly green. You will find yourself drowned in the intoxicating red of the wild fruits as well as the glamour of flowers in full blown. And your heart will be lingering on the woods as its time for the wild fruits to ripe. The picturesque Arxan in Autumn is indeed a fairyland only exists in a dream that satisfies all your fantasies. If itrains heavily on Saturday night, some elderly Chinese will say it is because Zhinu, or the Weaving Maid, is crying on the day she met her husband Niulang, or the Cowherd, on the Milky Way. Most Chinese remember being told this romantic tragedy when they were children on Qixi, or the Seventh Night Festival, which falls on the seventh day of the seventh lunar month, which is usually in early August. This year it falls on Saturday, August 2. Folklore Story As the story goes, once there was a cowherd, Niulang, who lived with his elder brother and sister-in-law. But she disliked and abused him, and the boy was forced to leave home with only an old cow for company. The cow, however, was a former god who had violated imperial rules and was sent to earth in bovine form. One day the cow led Niulang to a lake where fairies took a bath on earth. Among them was Zhinu, the most beautiful fairy and a skilled seamstress. The two fell in love at first sight and were soon married. They had a son and daughter and their happy life was held up as an example for hundreds of years in China. Yet in the eyes of the Jade Emperor, the Supreme Deity in Taoism, marriage between a mortal and fairy was strictly forbidden. He ordered the heaven troop to catch Zhinu back. Niulang grew desperate when he discovered Zhinu had been taken back to heaven. Driven by Niulangs misery, the cow told him to turn its hide into a pair of shoes after it died. The magic shoes whisked Niulang, who carried his two children in baskets strung from a shoulder pole, off on a chase after the empress. The pursuit enraged the empress, who took her hairpin and slashed it across the sky creating the Milky Way which separated husband from wife. But all was not lost as magpies, moved by their love and devotion, formed a bridge across the Milky Way to reunite the family. Even the Jade Emperor was touched, and allowed Niulang and Zhinu to meet once a year on the seventh night of the seventh month. This is how Qixi came to be. The festival can be traced back to the Han Dynasty (206 BC-AD 220). Traditionally, people would look up at the sky and find a bright star in the constellation Aquila as well as the star Vega, which are identified as Niulang and Zhinu. The two stars shine on opposite sides of the Milky Way. Customs In bygone days, Qixi was not only a special day for lovers, but also for girls. It is also known as the Begging for Skills Festival or Daughters Festival. In this day, girls will throw a sewing needle into a bowl full of water on the night of Qixi as a test of embroidery skills. If the needle floats on top of the water instead of sinking, it proves the girl is a skilled embroiders. Single women also pray for finding a good husband in the future. And the newly married women pray to become pregnant quickly. Tradition transformed The love story of Niulang and Zhinu, and the Qixi Festival have been handed down for generations. Yet these ancient traditions and customs are slowly dying out. Many modern Chinese, particularly youngsters, seem to know more about St Valentines Day on February 14, characterized by bouquets of roses, chocolates and romantic candlelight dinners, than they do about their home-grown day for lovers. Even Qixi is nowadays referred to as the Chinese Valentines Day. More and more young Chinese people begin to celebrate this day in a very similar way as that in western countries. Fewer people than ever will gaze at the heavens on Saturday to pick out the two stars shining bright on either side of the Milky Way, that is, if people even know on which day Qixi falls. There are ready reminders dotted about, in the form of big ads saying Sales on Chinese Valentines Day! in shops, hotels and restaurants. But few young women will mark the festival with their boyfriends, or take part in traditional activities to pray for cleverness. A large-scale of exhibition on the Silk Road opened to the public in the National Museum on Thursday. The exhibition displays more than 400 treasures from Shaanxi province, Gansu province and 14 other regions. It is largest scale exhibition that shows the history of the Silk Road in recent years. AsAPECis going on in Beijing, the exhibit aims to show the world this brilliant section of history. The Silk Road is a series of trade and cultural transmission routes that were central to cultural interaction through regions of the Asian continent. It connected the West and East by linking traders, merchants, pilgrims, monks, soldiers, nomads, and urban dwellers from China and India to the Mediterranean Sea during various periods of time. I met my dear hubby in 2009 the second year I was in my school and it was the first year when he came here. We became colleagues. And there was nothing special happening during that year. He was just a kind and humble brother graduated from the same college as me. But we did not know each other till he became my colleague and his office desk was just in front of me. There was only a glass between us. So actually we could see each other when we both look up. But it is not the main reason that really draws us close. How we become close to each other was something seems quite natural. We went out to play badminton with other colleagues and we sometimes chatted for a while. He is a man of few words but somehow sometimes will say something really humorous. Then one day, to my great surprise, I found a pot of beautiful flower on my desk. It was just the flower I had talked about with my colleague the other day, and I thought it was her who put the flower there. But the truth is not. It was the humble guy sitting in front of me. He just simply said ,”well, I caught sight of this flower and thought that its beautiful and you may like it”. I wonder why I was moved because of these simple words and present. Maybe it is the sincerity and the true self that impress me. I thanked him and some colleagues walked past my desk would appreciate the beautiful flower and they noticed that something romance happened there. Then later on, there were some little surprises once in a while. Once, there was something wrong with my drawer and I had complained about it unconsciously. And he fixed it for me. Then the other day, he placed several pink diamond roses beside the flower with a piece of paper say