基于EGO1d的密码锁程序，拨码开关设置密码，增加了倒计时功能

1. 利用拨码开关SW[7:0]来设置初始密码（密码设定为4个两位的二进制密码，SW[7:6]、SW[5,4]、SW[3:2]、SW[1:0]分别对应密码的第1、2、3、4位，即密码只能设置为00、01、10、11）； 2. 通过按键S3~S0分别对应的密码值为00、01、10、11； 3. 增加倒计时功能，并在数码管上显示；

 属性            大小     日期    时间   名称
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     目录           0  2019-06-18 23:43  pro1\
     目录           0  2019-06-21 08:08  pro1\project_1\
     目录           0  2019-06-21 08:02  pro1\project_1\.Xil\
     目录           0  2019-06-21 08:02  pro1\project_1\project_1.cache\
     目录           0  2019-06-19 16:11  pro1\project_1\project_1.cache\compile_simlib\
     目录           0  2019-06-19 16:11  pro1\project_1\project_1.cache\compile_simlib\activehdl\
     目录           0  2019-06-19 16:11  pro1\project_1\project_1.cache\compile_simlib\ies\
     目录           0  2019-06-19 16:11  pro1\project_1\project_1.cache\compile_simlib\modelsim\
     目录           0  2019-06-19 16:11  pro1\project_1\project_1.cache\compile_simlib\questa\
     目录           0  2019-06-19 16:11  pro1\project_1\project_1.cache\compile_simlib\riviera\
     目录           0  2019-06-19 16:11  pro1\project_1\project_1.cache\compile_simlib\vcs\
     目录           0  2019-06-18 23:45  pro1\project_1\project_1.cache\wt\
     文件        5671  2019-06-21 08:08  pro1\project_1\project_1.cache\wt\gui_resources.wdf
     文件        2237  2019-06-21 08:08  pro1\project_1\project_1.cache\wt\java_command_handlers.wdf
     文件         122  2019-06-21 08:02  pro1\project_1\project_1.cache\wt\project.wpc
     文件        5404  2019-06-20 20:22  pro1\project_1\project_1.cache\wt\synthesis.wdf
     文件         100  2019-06-20 20:22  pro1\project_1\project_1.cache\wt\synthesis_details.wdf
     文件        5995  2019-06-21 08:08  pro1\project_1\project_1.cache\wt\webtalk_pa.xml
     目录           0  2019-06-21 08:07  pro1\project_1\project_1.hw\
     目录           0  2019-06-18 23:49  pro1\project_1\project_1.hw\hw_1\
     文件         741  2019-06-21 08:08  pro1\project_1\project_1.hw\hw_1\hw.xml
     目录           0  2019-06-18 23:49  pro1\project_1\project_1.hw\hw_1\wave\
     文件         343  2019-06-18 23:49  pro1\project_1\project_1.hw\project_1.lpr
     目录           0  2019-06-21 08:02  pro1\project_1\project_1.ip_user_files\
     目录           0  2019-06-21 08:02  pro1\project_1\project_1.runs\
     目录           0  2019-06-20 20:23  pro1\project_1\project_1.runs\.jobs\
     文件         227  2019-06-18 23:44  pro1\project_1\project_1.runs\.jobs\vrs_config_1.xml
     文件         248  2019-06-19 19:43  pro1\project_1\project_1.runs\.jobs\vrs_config_10.xml
     文件         227  2019-06-19 19:54  pro1\project_1\project_1.runs\.jobs\vrs_config_11.xml
     文件         241  2019-06-19 19:55  pro1\project_1\project_1.runs\.jobs\vrs_config_12.xml
     文件         248  2019-06-19 19:56  pro1\project_1\project_1.runs\.jobs\vrs_config_13.xml
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