当时钟正常走的的时候，按一下key2，第一位开始闪亮，且通过key1来对该位进行加1操作，通过key2来向右移动要调节的位的闪亮和通过key1进行加操作完成校时功能，知道按到数码管不再闪亮-When the clock normal walking, click the key2, first begin to flash, and by key1 to this bit are incremented by key2 to move to the right to adjust the bit shiny and add operation performed by key1 complete timing function, press to know that digital is no longer shining