试题2Word格式文档下载.docx
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试题2Word格式文档下载.docx
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设计总体框图如图1:
单元模块设计
AT89S52单片机最小系统:
最小系统包括晶体振荡电路、复位开关和电源部分。
图2为AT89S52单片机的最小系统。
图二最小系统电路图
LED显示模块
本模块选用16个5mm的高亮LED灯排成一列,并加上一个IN4007保护二极管构成。
电路图如图三。
图三LED显示电路
按键切换模块
由于本实验有多种显示效果,所以按键切换必不可少。
为了节省空间,只用了一个按键来切换。
下图是按键电路图。
图四按键切换电路
5软件设计
主程序流程图如下:
图五主程序流程图
系统测试
接上电源,通过开关K1的不断切换,就能显示不同的效果图。
效果一:
效果二:
效果三:
元器件明细表:
AT89S52一个,16个高亮5mmLED,IN4007一个,锁紧夹一个,排针若干,按键2个,10K电阻2个,12M晶振一个,220欧一个,30pf的电容2个,一个3mm的LED。
系统整体电路图如下:
附录
程序:
#include<
reg51.h>
#defineucharunsignedchar
#defineuintunsignedint
sbitkey=P3^0;
ucharnum,keynum=0;
ucharcodewelcome1[]={0x07,0xF7,0xFF,0x07,0xFF,0xF7,0x07,0xFF,
0xFF,0xFF,0x7F,0x7F,0x7F,0x7F,0xFF,0xFF,
0xFF,0xF7,0xF7,0x07,0xFF,0xFF,0xFF,0xFF,
0xFF,0xFF,0xFF,0x7F,0x7F,0x7F,0xFF,0xFF,
0x7F,0x7F,0x7F,0x7F,0x7F,0x7F,0x7F,0xFF,
0xFF,0xFF,0x7F,0x7F,0x7F,0x7F,0xFF,0xFF
};
ucharcodewelcome2[]={0xFC,0xC3,0xF8,0xFF,0xF8,0xC3,0xFC,0xFF,
0xFF,0xE0,0xDD,0xDD,0xDD,0xDD,0xEC,0xFF,
0xFF,0xDF,0xDF,0xC0,0xDF,0xDF,0xFF,0xFF,
0xFF,0xF1,0xEE,0xDF,0xDF,0xDF,0xEE,0xFF,
0xFF,0xE0,0xDF,0xDF,0xDF,0xDF,0xE0,0xFF,
0xDF,0xC0,0xDF,0xFF,0xC0,0xDF,0xFF,0xC0,
ucharcodedianzixi1[]={0xFF,0xFF,0x03,0x03,0xB3,0xB3,0x00,0x00,0xB3,0xB3,0xB3,0x03,0x03,0xFF,0xFF,0xFF,0x3F,0x3F,0x3C,0x3C,0x3C,0x3C,0x3C,0x0C,0x0C,0x24,0x30,0x38,0x3C,0x3F,0x3F,0xFF,0xFF,0xFF,0xF9,0xD9,0xC9,0x41,0x11,0x99,0xD9,0xC9,0xE4,0x34,0x7C,0xFC,0xFF,0xFF
};
ucharcodedianzixi2[]={0xFF,0xFF,0xF0,0xF0,0xF9,0xF9,0xC0,0x80,0x99,0x99,0x99,0x98,0x98,0x87,0xC7,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xDF,0x9F,0x80,0xC0,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xDF,0xCC,0xE4,0xF4,0xFC,0x9C,0x80,0xC0,0xFE,0xFE,0xF6,0xE6,0xCC,0xFF,0xFF
ucharcodewuhuan1[]={0xFF,0xFF,0xFF,0x0F,0xF7,0xFB,0xFD,0xFD,0xFD,0xFD,0x7B,0xB7,0x0F,0xB7,0xBB,0x7D,0xFD,0xFD,0xFD,0x7B,0xB7,0x0F,0xB7,0xBB,0x7D,0xFD,0xFD,0xFD,0xFB,0xF7,0x0F,0xFF};
ucharcodewuhuan2[]={0xFF,0xFF,0xFF,0xFF,0xFE,0xFD,0xFB,0xFB,0xE1,0xDA,0xBD,0x7E,0x7F,0x7E,0x7D,0xBB,0xDA,0xE1,0xDA,0xBD,0x7E,0x7F,0x7E,0x7D,0xBB,0xDA,0xE1,0xFB,0xFD,0xFE,0xFF,0xFF};
ucharcodedianji1[]={0xDD,0x99,0x33,0x01,0x01,0x99,0x21,0xCF,0x47,0x43,0x10,0x10,0x43,0x47,0xCF,0xFF,
0x7F,0x0F,0xFF,0x00,0x00,0x9F,0x7F,0x01,0x01,0x9F,0x7F,0xFF,0x00,0x00,0xFF,0xFF,0xFF,0xC7,0xC6,0x24,0x21,0x27,0x26,0x24,0x21,0x27,0x23,0x20,0xC4,0xC7,0xFF,0xFF,0x01,0x01,0x99,0x01,0x71,0xE3,0xE3,0x93,0x92,0x90,0x91,0x93,0x93,0xE3,0xE3,0xFF,0xFF,0x1F,0xEF,0xF7,0xF7,0xF7,0xEF,0x1F,0xFF,0x07,0xB7,0xB7,0xB7,0xB7,0x77,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0x1F,0xE7,0xFB,0xFF,0x9F,0xEF,0xF7,0xF7,0xEF,0x1F,0xFF,0xFF,0xCF,0xF7,0xF7,0xF7,0xF7,0x0F,0xFF};
ucharcodedianji2[]={0xCF,0x81,0xF9,0x80,0x80,0xFB,0xF8,0xE7,0xE2,0x92,0x80,0xC0,0xF2,0xE2,0xE7,0xFF,
0xFC,0x9F,0x87,0xE0,0xF8,0xFF,0xFE,0xC0,0xC0,0xFF,0xFE,0xFF,0x80,0x80,0xFF,0xFF,
0xFF,0xF9,0xF9,0xF9,0xF9,0xD9,0x99,0x81,0xC0,0xF8,0xF9,0xF9,0xF9,0xF9,0xFF,0xFF,
0x80,0x80,0xF3,0xF0,0xB8,0x9F,0xCC,0xE0,0xF0,0xFC,0xC0,0x80,0x9C,0x9C,0x8F,0xFF,
0xFF,0xF0,0xEF,0xDF,0xDF,0xDF,0xEF,0xF0,0xFF,0xE7,0xDF,0xDF,0xDF,0xDF,0xE0,0xFF,
0xFF,0xBF,0xCF,0xF3,0xFC,0xFF,0xFF,0xFF,0xFF,0xCF,0xD7,0xDB,0xDD,0xDE,0xDF,0xFF,
0xFF,0xE7,0xDF,0xDF,0xDE,0xDE,0xE1,0xFF
};
voiddelay(ucharz)
{uchari,j;
for(i=0;
i<
z;
i++)
for(j=0;
j<
180;
j++);
}
voidwelcome()
{
delay
(2);
for(num=56;
num>
0;
num++)
{
P0=welcome1[num];
delay
(2);
P2=welcome2[num];
}
voiddianzixi()
for(num=48;
num--)
P0=dianzixi1[num];
P2=dianzixi2[num];
}
voidwuhuan()
for(num=32;
P0=wuhuan1[num];
P2=wuhuan2[num];
voiddianji()
for(num=0;
num<
104;
P0=dianji1[num];
P2=dianji2[num];
voidpresskey()
if(key==0)
{
delay(10);
if(key==0)
keynum++;
while(!
key);
}
voidmain()
while
(1)
presskey();
switch(keynum)
{
case1:
welcome();
break;
case2:
dianzixi();
case3:
wuhuan();
case4:
dianji();
case5:
P0=0xff;
P2=0xff;
case6:
keynum=1;
default:
}
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