Driving two Nixie tubes with an Arduino via a shift register and two SN74141s

Nixie tubes are really cool looking and are becoming quite popular for their 'retro' look. Although there are a number of tutorials out there on using nixie tubes and some nice pre-packaged units (see these nice ones from ogi lumenand ArduiNIX) I hadn't seen a simple tutorial on running them using a shift register like the SN74HC595. This would use the minimum number of Arduino pins as it can run as a seria ...

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