基于STC89C52单片机的测温控制系统_毕业论文设计

in(); } if(Key==14) { ht=10*ht1+ht2; } } } } else if(Key==7) { lt1=lt/10; lt2=lt; P1=0xf0; up(); while(down) { P1=lt1; P1_4=0; P1_5=1; P1_6=1; P1_7=1; delay(); P1=lt2; P1_4=1; P1_5=0; P1_6=1; P1_7=1; delay(); key_on(); delay(); } in(); up(); if(Key!=15) { number(); lt1=num_key; P1=lt1; P1_4=0; P1_5=1; P1_6=1; P1_7=1;

up();

while(down) {

key_on(); delay(); } in(); up();

if(Key!=15)

{ number(); lt2=num_key;

while(Key!=14&&Key!=15) {

P1=lt1; P1_4=0; P1_5=1; P1_6=1; P1_7=1; delay(); P1=lt2; P1_4=1; P1_5=0; P1_7=1; delay(); in(); }

if(Key==14)

{ lt=10*lt1+lt2; } } } } else if(Key==11) { ct1=ct/10; ct2=ct; P1=0xf0; up(); while(down) {

P1=ct1;

P1_4=0;

P1_6=1;

P1_5=1; P1_6=1; P1_7=1; delay(); P1=ct2; P1_4=1; P1_5=0; P1_6=1; P1_7=1; delay(); key_on(); delay(); } in(); up();

if(Key!=15) { number(); ct1=num_key; P1=ct1; P1_4=0; P1_5=1; P1_6=1; P1_7=1; up();

while(down) {

key_on(); delay(); } in(); up();

if(Key!=15) {

number(); ct2=num_key;

while(Key!=14&&Key!=15) {

P1=ct1; P1_4=0; P1_5=1; P1_6=1; P1_7=1; delay();

P1_4=1; P1_5=0; P1_6=1; P1_7=1; delay(); } if(Key==14) { ct=10*ct1+ct2; } } } } }

void cpr() { if(ltlt) { P3_4=0; } else { P3_5=0; } } }

P1=ct2;

in();