2013八路抢答器课程设计(6)

} }

if(key4 == 0) { delay(8);

if((key4 == 0)&&(!key4_flag)) {

key4_flag = 1;

number = 4; number_display = number; } } else {

key4_flag = 0;

number = 0; }

if(key5 == 0) { delay(8);

if((key5 == 0)&&(!key5_flag)) {

25

key5_flag = 1;

number = 5; number_display = number; } } else {

key5_flag = 0;

number = 0; }

if(key6 == 0) { delay(8);

if((key6 == 0)&&(!key6_flag)) {

key6_flag = 1;

number = 6; number_display = number; } } else {

26

key6_flag = 0;

number = 0; }

if(key7 == 0) { delay(8);

if((key7 == 0)&&(!key7_flag)) {

key7_flag = 1;

number = 7; number_display = number; } } else {

key7_flag = 0;

number = 0; }

if(key8 == 0) { delay(8);

if((key8 == 0)&&(!key8_flag))

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{

key8_flag = 1;

number = 8; number_display = number; } } else {

key8_flag = 0;

number }

if(number_display {

return 1; } else { return 0; } } }

void reset_keyscan()

= 0; //复位键扫描函数28

!= 0)

{

if(reset == 0) { delay(8);

if((reset == 0)&&( !reset_flag)) {

reset_flag = 1; number_display = 0; state = 1; } } else {

reset_flag = 0; } } //主函数 void main() { // uint t; TMOD=0x01;

TH0=(65536-50000)/256;

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