救急救急考试题求程序

网上一大堆！！！
______至从有了小尾巴，我再也不感到孤单！

#include<reg52.h>
#include<intrins.h>
#define led P0
#define uint unsigned int
#define uchar unsigned char
uchar time10mscount=0;
bit time500ms=0;
void init()
{
led=0xff;
TMOD=0x01;
EA=1;
ET0=1;
TR0=1;
TH0=(65536-10000)/256;
TL0=(65536-10000)%256;
}
void time0() interrupt 1
{
TH0=(65536-10000)/256;
TL0=(65536-10000)%256;
time10mscount++;
if(time10mscount==50)
{
time10mscount=0;
time500ms=1;
}
}
void main()
{
init();
_nop_();
while(1)
{
if(time500ms)
{
time500ms=0;
switch(led)
{
case(0xff):
{led=0xfe;
break;}
case(0xfe):
{led=0xfd;
break;}
case(0xfd):
{led=0xfb;
break;}
case(0xfb):
{led=0xf7;
break;}
case(0xf7):
{led=0xef;
break;}
case(0xef):
{led=0xdf;
break;}
case(0xdf):
{led=0xbf;
break;}
case(0xbf):
{led=0x7f;
break;}
case(0x7f):
{led=0x00;
break;}
case(0x00):
{led=0xff;
break;}
default:
break;
}
}
}
}

这个是不是跑马灯

话说我们也做过类似的，不过是循环显示123456。。。

这个是接收的程序
#include "REG51.H"
void INT_TR(void) interrupt 4
{
P1=SBUF;
RI=0;
}
main()
{
TMOD=0x20;
TH1=0xe8;
TL1=0xe8;
PCON=0;
SCON=0x50;
P1=0xff;
TR1=1;
ES=1;
EA=1;
while(1){
}
}

这个是发送程序
#include "REG51.H"
main()
{
TMOD=0x20;
TH1=0xe8;
TL1=0xe8;
PCON=0;
SCON=0x50;
ES=1;
IT1=1;
EX1=1;
TR1=1;
EA=1;
while(1){
}
}
void INT_1(void) interrupt 2
{
SBUF=P1;
}
void INT_TR(void) interrupt 4
{
TI=0;
}

这个是线路图

这个是模拟交通灯的程序。就当参考下吧
DATAS SEGMENT
DATAS ENDS
STACKS SEGMENT
ORG 2000H
DW 256 DUP(?)
TOP LABEL WORD
STACKS ENDS
CODE SEGMENT
ASSUME CS:CODE,DS:DATAS,SS:STACKS
ORG 1000H
START:MOV DX,0FFDBH
MOV AL,88H
OUT DX,AL
RED:MOV DX,0FFD8H ;A
MOV AL,0B6H ;10110110b
OUT DX,AL
MOV DX,0FFD9H ;B
MOV AL,0FDH ;11111101b
OUT DX,AL ;四个红灯亮
CALL DELAY2
GREEN13:
MOV DX,0FFD8H ;A
MOV AL,0ADH ;10101101
OUT DX,AL
MOV DX,0FFD9H
MOV AL,0FDH ;11111101
OUT DX,AL
CALL DELAY1
MOV CX,8H

YELLOW13:
MOV DX,0FFD8H
MOV AL,09BH ;10011011
OUT DX,AL
MOV DX,0FFD9H
MOV AL,0FDH
OUT DX,AL
CALL DELAY2
MOV DX,0FFD8H
MOV AL,0BFH ;10111111
OUT DX,AL
MOV DX,0FFD9H
MOV AL,0FDH
OUT DX,AL
CALL DELAY2
LOOP YELLOW13
RED1234:
MOV DX,0FFD8H
MOV AL,0B6H
OUT DX,AL
MOV DX,0FFD9H
MOV AL,0FDH
OUT DX,AL
CALL DELAY2
GREEN24:
MOV DX,0FFD8H
MOV AL,076H
OUT DX,AL
MOV DX,0FFD9H
MOV AL,0FBH
OUT DX,AL
CALL DELAY1
MOV CX,8H
YELLOW24:
MOV DX,0FFD8H
MOV AL,0F6H
OUT DX,AL
MOV DX,0FFD9H
MOV AL,0F6H
OUT DX,AL
CALL DELAY2
MOV DX,0FFD8H
MOV AL,0F6H
OUT DX,AL
MOV DX,0FFD9H
MOV AL,0FFH
OUT DX,AL
CALL DELAY2
LOOP YELLOW24
JMP RED

DELAY1 PROC NEAR
PUSH AX
PUSH BX
PUSH CX
MOV AX,0FFh
R4:MOV CX,0FFFh
R5:DEC CX
JNZ R5
DEC AX
JNZ R4
POP CX
POP BX
POP AX
RET
DELAY1 ENDP
DELAY2 PROC NEAR
PUSH AX
PUSH BX
PUSH CX
MOV AX,03H
R3:MOV BX,0AH
R2:MOV CX,0FFFH
R1:DEC CX
JNZ R1
DEC BX
JNZ R2
DEC AX
JNZ R3
POP CX
POP BX
POP AX
RET
DELAY2 ENDP
CODE ENDS
END START