用51单片机,16个灯依次点亮后不灭最后频闪三次,用p1和p2口接灯答:ORG 0000HLJMP MAINORG 0030HMAIN: MOV A,#0FEH MOV B,#0FFH MOV R2,#16LOOP: MOV P1,A MOV P2,B LCALL DELAY CLR C RLC A XCH A,B RLC A XCH A,B DJNZ R2,LOOP MOV R2,#3LOOP1: MOV P1,#00H MOV P2,#00H LCALL DELAY ...
51单片机,用一个开光控制一个小灯泡,小灯泡在亮之后30S熄灭。求个程序...答:KEY EQU P1.0 LED EQU P1.1 ORG 0000H LJMP MAIN ORG 0030H MAIN:JB KEY,JNB KEY,CLR LED LCALL DELAY SETB LED SJMP MAIN DELAY:MOV R2,#30 DELAY1S:MOV R3,#20 DELAYMS:MOV R4,#100 DELAY1:MOV R5,#250 DJNZ R5,DJNZ R4,DELAY1 DJNZ R3,DELAYMS DJNZ R2,DELAY1S RET END ...