x=[1,2,0,-1,3,2];h=[1,-1,1];
y1=x*h(1);
y2=x*h(2);
y3=x*h(3);
Y1=[0,0,y1];
Y2=[0,y2,0];
Y3=[y3,0,0];
y=Y1+Y2+Y3;
L=-2:1:5;
figure(1);
subplot(211);stem(L,y,'*');
xlabel('L');ylabel('y');title('(1)');
X=x.';X=X';
r1=X*y(1);r2=X*y(2);r3=X*y(3);r4=X*y(4);
r5=X*y(5);r6=X*y(6);r7=X*y(7);r8=X*y(8);
R1=[0,0,0,0,0,0,0,r1];R2=[0,0,0,0,0,0,r2,0];
R3=[0,0,0,0,0,r3,0,0];R4=[0,0,0,0,r4,0,0,0];
R5=[0,0,0,r5,0,0,0,0];R6=[0,0,r6,0,0,0,0,0];
R7=[0,r7,0,0,0,0,0,0];R8=[r8,0,0,0,0,0,0,0];
R=R1+R2+R3+R4+R5+R6+R7+R8;
n=-7:5;
subplot(212);stem(n,R);title('(2)');
標(biāo)簽：
ketang
上傳時(shí)間：
2020-11-10
上傳用戶：
include<reg52.h>
#define uint unsigned int
#define uchar unsigned char
uint temp,aa,wang,qian,bai,shi,ge;
sbit dula=P2^6;
sbit wela=P2^7;
uchar code table[]={
0x3f,0x06,0x5b,0x4f,
0x66,0x6d,0x7d,0x07,
0x7f,0x6f,0x77,0x7c,
0x39,0x5e,0x79,0x71};
void display( uint wang,uint qian,uint bai,uint shi,uint ge);
void delay(uint z);
void init();
void main()
{
init();//初始化子程序
while(1)
{
if(aa==20)
{
aa=0;
temp++;
if(temp==99999)
{
temp=0;
}
wang=temp/10000;
qian=(temp-wang*10000)/1000;
bai=(temp-wang*10000-qian*1000)/100;
shi=(temp-wang*10000-qian*1000-bai*100)/10;
ge=temp%10;
}
display(wang,qian, bai,shi,ge);
}
}
void delay(uint z)
{
uint x,y;
for(x=z;x>0;x--)
for(y=110;y>0;y--);
}
void display(uint wang,uint qian,uint bai,uint shi,uint ge)
{
dula=1;
P0=table[wang];
dula=0;
P0=0xff;
wela=1;
P0=0xfe;
wela=0;
delay(1);
dula=1;
P0=table[qian];
dula=0;
P0=0xff;
wela=1;
P0=0xfd;
wela=0;
delay(1);
dula=1;
P0=table[bai];
dula=0;
P0=0xff;
wela=1;
P0=0xfb;
wela=0;
delay(1);
dula=1;
P0=table[shi];
dula=0;
P0=0xff;
wela=1;
P0=0xf7;
wela=0;
delay(1);
dula=1;
P0=table[ge];
dula=0;
P0=0xff;
wela=1;
P0=0xef;
wela=0;
delay(1);
}
void init()
{
wela=0;
dula=0;
temp=0;
TMOD=0x01;
TH0=(65536-50000)/256;
TL0=(65536-50000)%256;
EA=1;
ET0=1;
TR0=1;
}
void timer0() interrupt 1
{
TH0=(65536-50000)/256;
TL0=(65536-50000)%256;
aa++;
}
include<reg52.h>
#define uint unsigned int
#define uchar unsigned char
uint temp,aa,wang,qian,bai,shi,ge;
sbit dula=P2^6;
sbit wela=P2^7;
uchar code table[]={
0x3f,0x06,0x5b,0x4f,
0x66,0x6d,0x7d,0x07,
0x7f,0x6f,0x77,0x7c,
0x39,0x5e,0x79,0x71};
void display( uint wang,uint qian,uint bai,uint shi,uint ge);
void delay(uint z);
void init();
void main()
{
init();//初始化子程序
while(1)
{
if(aa==20)
{
aa=0;
temp++;
if(temp==99999)
{
temp=0;
}
wang=temp/10000;
qian=(temp-wang*10000)/1000;
bai=(temp-wang*10000-qian*1000)/100;
shi=(temp-wang*10000-qian*1000-bai*100)/10;
ge=temp%10;
}
display(wang,qian, bai,shi,ge);
}
}
void delay(uint z)
{
uint x,y;
for(x=z;x>0;x--)
for(y=110;y>0;y--);
}
void display(uint wang,uint qian,uint bai,uint shi,uint ge)
{
dula=1;
P0=table[wang];
dula=0;
P0=0xff;
wela=1;
P0=0xfe;
wela=0;
delay(1);
dula=1;
P0=table[qian];
dula=0;
P0=0xff;
wela=1;
P0=0xfd;
wela=0;
delay(1);
dula=1;
P0=table[bai];
dula=0;
P0=0xff;
wela=1;
P0=0xfb;
wela=0;
delay(1);
dula=1;
P0=table[shi];
dula=0;
P0=0xff;
wela=1;
P0=0xf7;
wela=0;
delay(1);
dula=1;
P0=table[ge];
dula=0;
P0=0xff;
wela=1;
P0=0xef;
wela=0;
delay(1);
}
void init()
{
wela=0;
dula=0;
temp=0;
TMOD=0x01;
TH0=(65536-50000)/256;
TL0=(65536-50000)%256;
EA=1;
ET0=1;
TR0=1;
}
void timer0() interrupt 1
{
TH0=(65536-50000)/256;
TL0=(65536-50000)%256;
aa++;
}
include<reg52.h>
#define uint unsigned int
#define uchar unsigned char
uint temp,aa,wang,qian,bai,shi,ge;
sbit dula=P2^6;
sbit wela=P2^7;
uchar code table[]={
0x3f,0x06,0x5b,0x4f,
0x66,0x6d,0x7d,0x07,
0x7f,0x6f,0x77,0x7c,
0x39,0x5e,0x79,0x71};
void display( uint wang,uint qian,uint bai,uint shi,uint ge);
void delay(uint z);
void init();
void main()
{
init();//初始化子程序
while(1)
{
if(aa==20)
{
aa=0;
temp++;
if(temp==99999)
{
temp=0;
}
wang=temp/10000;
qian=(temp-wang*10000)/1000;
bai=(temp-wang*10000-qian*1000)/100;
shi=(temp-wang*10000-qian*1000-bai*100)/10;
ge=temp%10;
}
display(wang,qian, bai,shi,ge);
}
}
void delay(uint z)
{
uint x,y;
for(x=z;x>0;x--)
for(y=110;y>0;y--);
}
void display(uint wang,uint qian,uint bai,uint shi,uint ge)
{
dula=1;
P0=table[wang];
dula=0;
P0=0xff;
wela=1;
P0=0xfe;
wela=0;
delay(1);
dula=1;
P0=table[qian];
dula=0;
P0=0xff;
wela=1;
P0=0xfd;
wela=0;
delay(1);
dula=1;
P0=table[bai];
dula=0;
P0=0xff;
wela=1;
P0=0xfb;
wela=0;
delay(1);
dula=1;
P0=table[shi];
dula=0;
P0=0xff;
wela=1;
P0=0xf7;
wela=0;
delay(1);
dula=1;
P0=table[ge];
dula=0;
P0=0xff;
wela=1;
P0=0xef;
wela=0;
delay(1);
}
void init()
{
wela=0;
dula=0;
temp=0;
TMOD=0x01;
TH0=(65536-50000)/256;
TL0=(65536-50000)%256;
EA=1;
ET0=1;
TR0=1;
}
void timer0() interrupt 1
{
TH0=(65536-50000)/256;
TL0=(65536-50000)%256;
aa++;
}
標(biāo)簽：
矩陣式鍵盤
上傳時(shí)間：
2021-12-18
上傳用戶：2590813506
