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It appears to be an bank of 4 seven segment LED arrays, there appears to be decimal points as well as the two dots between the two pairs of numbers so time can be displayed as 12:55, etc. The board appears to wire each segment out to the connector. In order to drive it from an Arduino, you'll probably need 4 seven segment display drivers chips since the arduino won't have enough output pins to drive each of the pins directly. These devices are usually common-annode or common-cathode, so you'll need to first discover which it is. You should be able to take a 5 volt supply and a 470 ohm resistor in series and momentarily powering the connector pinsand see what segments turn on. You should be able to determine the entire pinout that way. Best Wishes.
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Posted:Sep 25, 2010
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