DELAY10S: MOV R2,#100 ；1DLY1: MOV R3,#200 ；1*100DLY2: MOV R4,#248 ；1*200*100 DJNZ R4,$ ；2*249*200*100 DJNZ R3,DLY2 ；2*200*100 DJNZ R2,DLY1 ；2*100 RET ；2Total=注释中所有之和=10020303us=10.02S
