设计一个电子时钟，要求可以显示时、分、秒，用户可以设置时间

EDA课程设计电子钟一、设计要求1、基本功能要求设计一个电子时钟，要求可以显示时、分、秒，用户可以设置时间。扩展功能要求2、跑表功能，闹钟功能，调整数码管的亮度。二、系统结构控制键JIAN5、JIAN4、JIAN7、JIAN8数码管显示段选信号输出SG选择6位数码管中的某一个显示数据；发光二极管控制信号输出LED（70）闹钟声音输出SPEAKER通过一个10M信号分出各种所需频率功能介绍运行后，选择模式7，8位数码管分显示时间的时、分、秒，当前为模式0时间显示模式，按键7为模式选择键，按下按键7，系统进入模式1，第二次按下为模式2，设置时间模式，第三次按下为跑表模式，第四次为闹钟设置模式，第五次为亮度调节模式设置时间模式，按键4控制更改数码管的位，按键5控制选中数码管的数值，时间设置完成后，按键按键8，设置时间会保存住，并在模式0中显示；系统进入模式2秒表模式，按键4为开始/结束键，按键5为清零键；系统进入模式3闹钟设置模式，相关设置与模式1相同，当当前时间与闹钟设置时间相同时，喇叭就会响；系统进入模式4亮度调节模式，通过按键4设置亮度，共三种亮度；再按下按键7，系统又会进入模式0。4、RTL图三、VHDL源程序1、LIBRARYIEEE通过10M分出所需频率USEIEEESTD_LOGIC_1164ALLUSEIEEESTD_LOGIC_UNSIGNEDALLENTITYFENPINISPORTCLK_10MINSTD_LOGICCLK_10000OUTSTD_LOGICCLK_100OUTSTD_LOGICCLK_1OUTSTD_LOGICENDENTITYARCHITECTURESUB1OFFENPINISSIGNALQ_1STD_LOGIC_VECTOR8DOWNTO0SIGNALQ_2STD_LOGIC_VECTOR6DOWNTO0SIGNALQ_3STD_LOGIC_VECTOR6DOWNTO0SIGNALCLK10000STD_LOGICSIGNALCLK100STD_LOGICSIGNALCLK1STD_LOGICBEGINPROCESSCLK_10MBEGINIFCLK_10MEVENTANDCLK_10M1THENIFQ_1500THENQ_1BT11BT11BT11BT11BT11BT11BT11BT11NULLENDCASEENDPROCESSP1P2PROCESSCLK_10000BEGINIFCLK_10000EVENTANDCLK_100001THENCNT8SG11SG11SG11SG11SG11SG11SG11SG11SG11SG11SG11SG11SG11SG11SG11SG11NULLENDCASEENDPROCESSP3PROCESSJIAN4,MOSHIBEGINIFMOSHI4THENIFJIAN4EVENTANDJIAN41THENIFFLASH2THENFLASHLIGHTIFCOUNT12THENCOUNT1IFCOUNT24THENCOUNT259THENFEN23THENSHI59THENMIAO23THENFENA0A0A0A0A0CLK_1S,JIAN8JIAN8,SHISHI1SHISHI2S,SHIGE1SHIGE2S,FENSHI1FENSHI2S,FENGE1FENGE2S,MIAOSHI1MIAOSHI2S,MIAOGE1MIAOGE2S,SHISHI2SHISHI1S,SHIGE2SHIGE1S,FENSHI2FENSHI1S,FENGE2FENGE1S,MIAOSHI2MIAOSHI1S,MIAOGE2MIAOGE1SU2XIANSHIPORTMAPCLK_10000CLK_10000S,JIAN4JIAN4,MOSHIMOSHIS,A0A0S,A1A1S,A3A3S,A4A4S,A6A6S,A7A7S,SG11SG,BT11BTU3SETTIMEPORTMAPMOSHIMOSHIS,JIAN5JIAN5,JIAN4JIAN4,SHISHISHISHI2S,SHIGESHIGE2S,FENSHIFENSHI2S,FENGEFENGE2S,MIAOSHIMIAOSHI2S,MIAOGEMIAOGE2SU4MOSHIPORTMAPJIAN7JIAN7,MOSHIMOSHISU5MUX5_1PORTMAPMOSHIMOSHIS,SHISHI1SHISHI1S,SHIGE1SHIGE1S,FENSHI1FENSHI1S,FENGE1FENGE1S,MIAOSHI1MIAOSHI1S,MIAOGE1MIAOGE1S,SHISHI2SHISHI2S,SHIGE2SHIGE2S,FENSHI2FENSHI2S,FENGE2FENGE2S,MIAOSHI2MIAOSHI2S,MIAOGE2MIAOGE2S,SHISHI3SHISHI3S,SHIGE3SHIGE3S,FENSHI3FENSHI3S,FENGE3FENGE3S,MIAOSHI3MIAOSHI3S,MIAOGE3MIAOGE3S,FENSHIFENSHIS,FENGEFENGES,MIAOSHIMIAOSHIS,MIAOGEMIAOGES,XMIAOSHIXMIAOSHIS,XMIAOGEXMIAOGES,A0A0S,A1A1S,A3A3S,A4A4S,A6A6S,A7A7SU6MIAOBIAOPORTMAPCLK_100CLK_100S,MOSHIMOSHIS,JIAN5JIAN5,JIAN4JIAN4,FENSHIFENSHIS,FENGEFENGES,MIAOSHIMIAOSHIS,MIAOGEMIAOGES,XMIAOSHIXMIAOSHIS,XMIAOGEXMIAOGESU7FENPINPORTMAPCLK_10MCLK_10M,CLK_10000CLK_10000S,CLK_100CLK_100S,CLK_1CLK_1SU8NAOZHONGSETPORTMAPMOSHIMOSHIS,JIAN5JIAN5,JIAN4JIAN4,SHISHISHISHI3S,SHIGESHIGE3S,FENSHIFENSHI3S,FENGEFENGE3S,MIAOSHIMIAOSHI3S,MIAOGEMIAOGE3SU9NAOZHONGSPEAKERPORTMAPCLK_100CLK_100S,SPEAKERSPEAKER,SHISHI1SHISHI3S,SHIGE1SHIGE3S,FENSHI1FENSHI3S,FE