I want to convert a nixxie tube based seven segment display to digital seven segment display without using microcontroller? What should I do .

 

Can you post a schematic of the nixie display that you want to convert?

 

What should I do .

Lift a finger. Think about what you are asking, and think about what kind of information would be useful to *total strangers who have no idea what you are looking at* to give you free advice.

Nixie tubes are high voltage devices, so the logic-level segment and digit signals exist behind high voltage driver circuits. Schematic, photo of both sides of any circuit boards, links to the product, etc.

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