数字钟
......\LED_flash.v
......\LED_flash_testbench.v
......\cnt.v
......\cnt_testbench.v
......\key.v
......\led_key.ucf
......\mode.v
......\model_testbench.v
......\test.v
......\time_set.v
......\time_set_testbench.v
......\timer.v
......\timer_testbench.v
......\timer_up.v
......\timer_up_testbench.v