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/* Arduino Countdown Timer by Randy Sarafan - 2013 Uses two 7-segment displays to countdown from 99 to 0. When the timer reaches zero, the display flashes and a piezo beeps. - To start the timer press the button. - To pause the timer, press the button again. - To reset before reaching 0, press the button 3 times quickly in under 1-second. When timer reaches 0, press once to reset. For more information visit: