Driving multiple Sparkfun 7-segment displays with an Arduino

I'm currently helping a couple of engineering students finish a senior project that didn't get finished last year. Long story... Anyway, it's a bicycle brake tester being built for Paul Components. The mechanical design is great, but they had trouble with the electronics. Part of those electronics involved writing numbers to a pair of Sparkfun 7-segment displays. There's a lot of discussion on the Sparkfun ...

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