基于单片机的多路抢答器设计

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uchar zdjs=0, jp; del(yj); sbit voice=P3^4; sbit key1=P2^0; sbit key2=P2^1; sbit key3=P2^2; sbit key4=P2^3; sbit key5=P2^4; sbit key6=P2^5; sbit key7=P2^6; sbit key8=P2^7; sbit key9=P3^2; void main() {

uint dpjs;

uchar yj;

TMOD=0x01,IE=0x82; TH0=0xd8, TL0=0xef; {

IT0=1; EA=1; EX0=1; TR0=1;

while(!Flag)

if(!key1) {P1=0x9E;Flag=1;dpjs=0;a=0;}//

else

else if(!key3){P1=0x0C;Flag=1;dpjs=494;a=494;}// else if(!key4){P1=0x98;Flag=1;dpjs=814;a=814;}// else if(!key5){P1=0x48;Flag=1;dpjs=1102;a=1102;}// else if(!key6){P1=0x40;Flag=1;dpjs=1320;a=1320;}// else if(!key7){P1=0x1E;Flag=1;dpjs=1592;a=1592;}// else if(!key8){P1=0x00;Flag=1;dpjs=2030;a=2030;}//

if(!key2){del(yj);P1=0x24;P1=0x24;P1=0x24;P1=0x24;Flag=1;dpjs=320;a=320;}//

}

while(Flag){zdjs=0;

dpjs++; yj=sound[dpjs]; dpjs++; jp=sound[dpjs]; while(zdjs!=jp) {

if(yj!=0xff) {

if(yj!=0) {

voice=!voice; del(yj); } else { dpjs=a;

break; } } else {

voice=0;

del(jp); } } } }

time0() interrupt 1 using 1 {

TH0=0xd8, TL0=0xef; zdjs++; }

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