Hello, My nephew is a gaming computer enthusiast and I was thinking of building him a small device which could monitor both the voltage and current used by his computer. However, rather then purchasing one of the currently available dual voltage/current monitors from the likes of eBay or Aliexpress, I would like to make one and display the results using old Soviet VFD or Nixie tubes. Are there any types of voltage and current monitoring solutions which could obtain both the voltage and current and feed a BCD signal to something like a SN74441 chip which in turn would drive the Nixie based display? Any examples available which someone might have already created a Nixie type display of voltage or current usage? Thanks everyone.