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The Tektronix 909 Desktop Calculator


The Tektronix 909 desktop calculator is built from multiple cards, and features lots of nixie tubes. Unfortunately, not all of the tubes light up on mine, and some that do light up tend to flicker a lot.


Inside the Tektronix 909 (Cover Off)


The Tektronix 909 with the cover off S M L XL

This is the Tektronix 909 with its cover open. It's built up from various circuit boards (below).


(Tektronix 909 (Board 2)


Board 2 from the Tektronix 909 S M L XL

This is one of the circuit boards from the Tektronix 909 calculator.

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