Time Study Arduino Assistant

/////////////////////////////////
// Time Study Arduino Assistant//
//      By Nicky Fingerle      //
/////////////////////////////////

double stopStartTimes [4][5] = { 0 };

/*
machine     | 1 | 2 | 3 | 4 | 5 |
lastStop    | - | - | - | - | - |
stopTime    | - | - | - | - | - |
restartTime | - | - | - | - | - |
*/

double downTimeAndElapsedTime [2][5] = { 0 };

/*
machine     | 1 | 2 | 3 | 4 | 5 |
elapsed     | - | - | - | - | - |
downtime    | - | - | - | - | - |
*/

double logSheet [1000][4];
bool isButtonPressed;
bool isStopped [5] = { 0 };
bool initialized [5] = { 0 };
int universalCount = 0;
int pullDown;

void setup()
{
    pinMode( 1, OUTPUT );
    pinMode( 2, OUTPUT );
    pinMode( 3, OUTPUT );
    pinMode( 4, OUTPUT );
    pinMode( 5, OUTPUT );
    pinMode( 6, INPUT );
    pinMode( 7, INPUT );
    pinMode( 8, INPUT );
    pinMode( 9, INPUT );
    pinMode( 10, INPUT );
}

void loop()
{
    for ( int i = 1; i < 5; ++i )
    {
        digitalWrite( i, HIGH );
        pullDown = i + 5; //This 5 needs to be increased by 1 for any additional machine
        isButtonPressed = digitalRead( pullDown );
        if ( isButtonPressed == HIGH )
        {
            if ( isStopped [i] == 0 )
            {
                isStopped [i] = 1;
                stopStartTimes [1][i] = millis();
                if ( initialized [i] = 0 )
                {
                    downTimeAndElapsedTime [0][i] = 0;
                    initialized [i] = 1;
                }
                else
                {
                    downTimeAndElapsedTime [0][i] = (round((stopStartTimes [1][i] - stopStartTimes [0][i]) / 100))/10;
                }
                stopStartTimes [0][i] = stopStartTimes [1][i];
            }
            else if ( isStopped [i] == 1 )
            {
                isStopped [i] = 0;
                stopStartTimes [2][i] = millis();
                downTimeAndElapsedTime [1][i] = (round((stopStartTimes [2][i] - stopStartTimes [1][i]) / 100))/10;
                logSheet [universalCount][0] = universalCount;
                logSheet [universalCount][1] = 1;
                logSheet [universalCount][2] = downTimeAndElapsedTime [1][0];
                logSheet [universalCount][3] = downTimeAndElapsedTime [0][0];
                //This is where the logging txt sheet and the LCD library come in.
                universalCount = universalCount + 1;
            }
        }
    }
}