TN2 LAB2

; VIET CT HIEN THI LED0 SO TU DEN SAU CAC KHOANG TIME 1S ORG 2000H MAIN: ACALL TU0DEN9 SJMP MAIN TU0DEN9: MOV A,#0E0H; 1110 0000: LED0 SANG MOV DPTR,#000H MOVX @DPTR,A ACALL DL1S INC A ; LED0 SANG TU 0DEN9 => A= 0E0H -> 0E9H CJNE A,#0EAH,$-4 RET DL1S: MOV R7,#10 L1: MOV R6,#200 L2: MOV R5,#250 DJNZ R5,$ DJNZ R6,L2 DJNZ R7,L1 RET END