private static void ShowMainDisplay(DateTime currentTime)
        {
            var thesisDueTime = new DateTime(2016, 2, 15, 16, 0, 0);
            var examStartTime = new DateTime(2016, 2, 22, 8, 30, 0);
            var examEndTime   = new DateTime(2016, 2, 22, 18, 30, 0);

            using (var lcd = new KanaLCD(0x38, 2, 40))
            {
                if (currentTime.Ticks < thesisDueTime.Ticks)
                {
                    var leftTime = thesisDueTime - currentTime;
                    lcd.ClearScreen();
                    lcd.SetCursor(0, 0);
                    lcd.Write("シュウロン テイシュツ マデ");
                    lcd.SetCursor(1, 0);
                    lcd.Write("アト " + leftTime.Days.ToString() + "d " + leftTime.Hours.To2DigitString() + ":"
                              + leftTime.Minutes.To2DigitString() + ":" + leftTime.Seconds.To2DigitString());
                }
                else if (currentTime.Ticks < examStartTime.Ticks)
                {
                    var leftTime = examStartTime - currentTime;
                    lcd.ClearScreen();
                    lcd.SetCursor(0, 0);
                    lcd.Write("シモン カイシ マデ");
                    lcd.SetCursor(1, 0);
                    lcd.Write("アト " + leftTime.Days.ToString() + "d " + leftTime.Hours.To2DigitString() + ":"
                              + leftTime.Minutes.To2DigitString() + ":" + leftTime.Seconds.To2DigitString());
                }
                else if (currentTime.Ticks < examEndTime.Ticks)
                {
                    var elapsedTime = currentTime - examStartTime;
                    lcd.ClearScreen();
                    lcd.SetCursor(0, 0);
                    lcd.Write("シモン カイシ カラ");
                    lcd.SetCursor(1, 0);
                    lcd.Write(elapsedTime.Hours.To2DigitString() + ":" + elapsedTime.Minutes.To2DigitString() + ":"
                              + elapsedTime.Seconds.To2DigitString() + " ケイカ");
                }
                else
                {
                    lcd.ClearScreen();
                    lcd.SetCursor(0, 0);
                    lcd.Write("シモン オツカレサマデシタ!");
                    lcd.SetCursor(1, 0);
                    lcd.Write(currentTime.Month.To2DigitString() + "/" + currentTime.Day.To2DigitString() + " "
                              + currentTime.Hour.To2DigitString() + ":" + currentTime.Minute.To2DigitString() + ":"
                              + currentTime.Second.To2DigitString());
                }
            }
        }
        private static void ShowAnotherDisplay(DateTime currentTime)
        {
            double temperature;

            using (var thermometer = new ADT7410(ADT7410.MeasurementMode.OneSamplePerSecond))
            {
                temperature = thermometer.ReadTemperature();
            }

            using (var lcd = new KanaLCD(0x38, 2, 40))
            {
                lcd.ClearScreen();
                lcd.SetCursor(0, 0);
                lcd.Write(currentTime.Year.To4DigitString() + "/"
                          + currentTime.Month.To2DigitString() + "/" + currentTime.Day.To2DigitString());
                lcd.SetCursor(1, 0);
                lcd.Write(currentTime.Hour.To2DigitString() + ":" + currentTime.Minute.To2DigitString() + ":"
                          + currentTime.Second.To2DigitString() + " "
                          + ((int)temperature).To2DigitString() + "." + (int)(temperature * 10) % 10 + "°C");
            }

            anotherDisplayCount--;
        }