单片机课程设计 - 基于C51简易计算器(4)

}

while(!keyin2);

} if(!keyin3) {

delay(5); if(!keyin3) {

if(g >= 15) } if(!keyin4) {

delay(5); if(!keyin4) {

if(h >= 15)

h = 0; else h ++; a[3] = h; while(!keyin4); g = 0; else g ++; a[2] = g;

while(!keyin3);

}

} } if(!keyin5) {

num1 = a[0]*16 + a[1]; num2 = a[2]*16 + a[3]; a[4] = num1 - num2; b[0] = a[4]; refresh_1(); delay(10);

}

}

b[1] = a[4]/16;

refresh_1(); delay(10); }

refresh();