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C语言:
#include <reg51.h> //包含特殊功能寄存器库
void delay(unsigned int x);
void main()
{
unsigned char i,j;
while(1)
{i=01;
for (j=0;j<8;j++)
{P1=i;
delay(100);
i=i*2;
}
}
}
void delay(unsigned int x)
{
unsigned char j;
while(x--)
{for (j=0;j<125;j++);}
}
汇编:
ORG 0000H
LJMP MAIN
ORG 0100H ;主程序
MAIN: MOV A,#01H
LOOP:MOV P1,A
CALL DELAY
RL A
SJMP LOOP
SJMP $
DELAY:MOV R7,#0FFH
DJNZ R7,$
RET
END
#include <reg51.h> //包含特殊功能寄存器库
void delay(unsigned int x);
void main()
{
unsigned char i,j;
while(1)
{i=01;
for (j=0;j<8;j++)
{P1=i;
delay(100);
i=i*2;
}
}
}
void delay(unsigned int x)
{
unsigned char j;
while(x--)
{for (j=0;j<125;j++);}
}
汇编:
ORG 0000H
LJMP MAIN
ORG 0100H ;主程序
MAIN: MOV A,#01H
LOOP:MOV P1,A
CALL DELAY
RL A
SJMP LOOP
SJMP $
DELAY:MOV R7,#0FFH
DJNZ R7,$
RET
END
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