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Learn to think in binary, like a computer, with the Binary Clock. By default the Binary Clock uses LED’s to display the time using the binary-coded decimal format (BCD) also known as the ‘Powers of Two’ binary system. That means each decimal digit of the hours, minutes and seconds is represented in binary by switching LED’s on and off. After mastering the ability to read the clock in BCD mode, this clock can also display the time in ‘True’ binary mode! The Binary Clock is a very interesting time piece that’s sure to grab the attention of others. After becoming familiar with the Binary Clock, you’ll be able to quickly and accurate read the time while your friends just stare in amazement.