基于74LS191和74LS160设计的数字电子钟proteus仿真文件，DSN格式，用proteus打开，主要功能就是电子钟计时，24小时制，有暂停/开始开关，有调整按钮可以调秒，调分和调时-74LS191 and 74LS160 based design of digital electronic clock proteus simulation files, DSN format, with proteus open, the main function is the electronic clock timer, 24-hour clock, pause/start switch, the button can be adjusted to adjust seconds, minutes and hours tune tune