51单片机 延时一秒，基于keil5,用汇编语言编写 ORG 0000H LJMP DELAY ORG 1000H DELAY: MOV R7,#0A7H ;ËÍ#0A7Hµ½¼Ä´æÆ÷R7;ÍâÑ­»·´ÎÊý DELAY1: MOV R6,#0ABH ; DELAY2: MOV R5,#09H ; DJNZ R5,$ DJNZ R6,DELAY1 ; DJNZ R7