基于51单片机计算器设计的protues仿真

uchar g1,g2,g3,g4; void display() //计算器 { P3 = 0xef; //令第一行为0，然后判断是哪一列按下 if(P3 != 0xef) { delay(200); if(P3 != 0xef) { k = P3 & 0xff; switch(k) { case 0xee:k_value = 7;break; case 0xed:k_value = 8;break; case 0xeb:k_value = 9;break; case 0xe7:k_value = 14;break; } }while(P3 != 0xef); if(k_value == 7 || k_value == 8 || k_value == 9) { if(flag == 0) { num1 = num1 * 10 + num[k_value]; } if(flag == 1) { num2 = num2 * 10 + num[k_value]; } if(flag == 2) { num3 = num3 * 10 + num[k_value]; } } if(k_value == 14) //加 { g1++; flag++; fuhao = 1; } write_data(0x30 + num[k_value]); } P3 = 0xdf; if(P3 != 0xdf) { delay(200); if(P3 != 0xdf) { k = P3 & 0xff; switch(k) { case 0xde:k_value = 4;break; case 0xdd:k_value = 5;break; case 0xdb:k_value = 6;break; case 0xd7:k_value = 13;break; } }while(P3 != 0xdf); if(k_value == 4 || k_value == 5 || k_value == 6) { if(flag == 0) { num1 = num1 * 10 + num[k_value]; } if(flag == 1) { num2 = num2 * 10 + num[k_value]; } if(flag == 2) { num3 = num3 * 10 + num[k_value]; } } if(k_value == 13) //减 { g2++; flag++; fuhao = 2; } write_data(0x30 + num[k_value]); } P3 = 0xbf; //令第三行为0，判断哪一列按下 if(P3 != 0xbf) { delay(200); if(P3 != 0xbf) { k = P3 & 0xff; switch(k) { case 0xbe:k_value = 1;break; case 0xbd:k_value = 2;break; case 0xbb:k_value = 3;break; case 0xb7:k_value = 12;break; } }while(P3 != 0xbf); if(k_value == 1 || k_value == 2 || k_value == 3) { if(flag == 0) { num1 = num1 * 10 + num[k_value]; } if(flag == 1) { num2 = num2 * 10 + num[k_value]; } if(flag == 2) { num3 = num3 * 10 + num[k_value]; } } if(k_value == 12) //乘 { g3++; flag++; fuhao = 3; } write_data(0x30 + num[k_value]); } P3 = 0x7f; //令第四行为0，判断哪一列按下 if(P3 != 0x7f) { delay(200); if(P3 != 0x7f) { k = P3 & 0xff; switch(k) { case 0x7e:k_value = 10;break; //清除 case 0x7d:k_value = 0;break; // 0 case 0x7b:k_value = 15;break; //等号 case 0x77:k_value = 11;break; //除/ } }while(P3 != 0x7f); if(k_value == 11) //除 { g4++; flag++; fuhao = 4; write_data(0x2f); } if(k_value == 0) { if(flag == 0) { num1 = num1 * 10 + num[k_value]; write_data(0x30); } if(flag == 1) { num2 = num2 * 10 + num[k_value]; write_data(0x30); } if(flag == 2) { num3 = num3 * 10 + num[k_value]; } } if(k_value == 15) //等于 { if(fuhao == 0){mode = 1;} if(fuhao == 1) //加 { write_command(0x4f + 0x80); write_command(0x04); //光标左移 result = num1 + num2; if(g1 == 2)result = num1 + num2 + num3; if(g2 == 1)result = num1 - num2 + num3; if(g3 == 1)result = num1 * num2 + num3; if(g4 == 1)result = num1 / num2 + num3; while(result != 0) { write_data(0x30 + result % 10); //显示结果最后一位在0x4f处 result = result / 10; } gotoxy(2,0);display_string("="); } if(fuhao == 2) //减 { write_command(0x4f + 0x80); write_command(0x04); if(num1 > num2)result = num1 - num2; if(num1 < num2)result = num2 - num1; if(g1 == 1)result = num1 + num2 - num3; if(g2 == 2)result = num1 - num2 - num3; if(g3 == 1)result = num1 * num2 - num3; if(g4 == 1)result = num1 / num2 - num3; while(result != 0) { write_data(0x30 + result % 10); //显示结果最后一位在0x4f处 result = result / 10; } if(num1 + num2 < num3)write_data(0x2d); gotoxy(2,0);display_string("="); } if(fuhao == 3) //乘 { write_command(0x4f + 0x80); write_command(0x04); result = num1 * num2; if(g1 == 1)result = num1 + num2 * num3; if(g2 == 1)result = num1 - num2 * num3; if(g3 == 2)result = num1 * num2 * num3; if(g4 == 1)result = num1 / num2 * num3; while(result != 0) { write_data(0x30 + result % 10); //显示结果最后一位在0x4f处 result = result / 10; } gotoxy(2,0);display_string("="); } if(fuhao == 4) //除 { xiao = 0; write_command(0x4f + 0x80); write_command(0x04); result = num1 / num2; if(g1 == 1)result = num1 + num2 / num3; if(g2 == 1)result = num1 - num2 / num3; if(g3 == 1)result = num1 * num2 / num3; if(g4 == 2)result = num1 / num2 / num3; while(result != 0) { xiao++; write_data(0x30 + result % 10); //显示结果最后一位在0x4f处 result = result / 10; if(xiao == 3) { write_data(0x2e); xiao = 0; } } gotoxy(2,0);display_string("="); } save_result = result; } if(k_value == 10) //清除 { FLCD1602_clear(); num1 = 0; num2 = 0; num3 = 0; g1 = 0; g2 = 0; g3 = 0; g4 = 0; flag = 0; fuhao = 0; } } } void display_time() //时间 { if(P3 == 0x7b) { delay(200); if(P3 == 0x7b) { mode = 0; }while(P3 == 0x7b); } gotoxy(1,0); display_string("Time:");display_num(2);display_string("-");display_num(min);display_string("-");display_num(sec); gotoxy(2,0); display_string("Date:");display_num(year);display_string("/");display_num(month);display_string("/");display_num(day); // gotoxy(1,0);display_num(year);display_string("Time:"); }