int b1 = 14;
int b2 = 27;
int b3 = 26;
int b4 = 25;

int stb1 = 0;
int stb2 = 0;
int stb3 = 0;
int stb4 = 0;

int pinosDisplay[]= {15,2,4,5,18,19,21};

                        // a b c d e f g
int segmentosNome[6][7]= {{1,0,1,1,0,1,1}, // S 
                          {1,1,1,1,1,1,0}, // 0
                          {1,1,0,0,1,1,1}, // P
                          {0,1,1,0,1,1,1}, // H
                          {0,1,1,0,0,0,0}, // I
                          {1,1,1,0,1,1,1}}; //A

int segmentosNumeros[10][7]= {
  {1,1,1,1,1,1,0}, // 0
  {0,1,1,0,0,0,0}, // 1
  {1,1,0,1,1,0,1}, // 2
  {1,1,1,1,0,0,1}, // 3
  {0,1,1,0,0,1,1}, // 4
  {1,0,1,1,0,1,1}, // 5
  {1,0,1,1,1,1,1}, // 6
  {1,1,1,0,0,0,0}, // 7
  {1,1,1,1,1,1,1}, // 8
  {1,1,1,1,0,1,1}}; // 9

                            // a b c d e f g
int segmentosCircular[6][7]= {{1,0,0,0,0,0,0}, //a
                             {0,1,0,0,0,0,0}, //b
                             {0,0,1,0,0,0,0}, //c
                             {0,0,0,1,0,0,0}, //d
                             {0,0,0,0,1,0,0}, //e
                             {0,0,0,0,0,1,0}}; //f

void setup() {
for(int linhas= 0; linhas<7; linhas++){
pinMode(pinosDisplay[linhas],OUTPUT);
 }
 pinMode(b1, INPUT);
 pinMode(b2, INPUT);
 pinMode(b3, INPUT);
 pinMode(b4, INPUT);
}

void loop (){

stb1= digitalRead(b1);
stb2= digitalRead(b2);
stb3= digitalRead(b3);
stb4= digitalRead(b4);

//B1
if (stb1==1){
for(int linha=0; linha<6;linha++){
for(int coluna=0; coluna<7; coluna++){
digitalWrite(pinosDisplay[coluna], segmentosNome[linha][coluna]);
    }
    delay (250);
  }
 }

 //B2
if (stb2==1){
for(int linha=0; linha<6;linha++){
for(int coluna=0; coluna<7; coluna++){
digitalWrite(pinosDisplay[coluna], segmentosCircular[linha][coluna]);
    }
    delay (250);
  }
 }

  //B3
if (stb3==1){
for(int linha <= 5; linha <0; linha--){
for(int coluna=0; coluna<7; coluna++){
digitalWrite(pinosDisplay[coluna], segmentosCircular[linha][coluna]);
    }
    delay (250);
  }
 }

//B4
 if (stb4==1){
for(int linha=0; linha<10;linha++){
for(int coluna=0; coluna<7; coluna++){
digitalWrite(pinosDisplay[coluna], segmentosNumeros[linha][coluna]);
    }
    delay(250);
   }
 }
}