Computermuseum der Fakultät Informatik deutsch français
One digit of the display. Visible: 4 pairs of transistors, make 4 Flip-Flops. In addition 10 transistors, the cathode drivers for the Nixie tubes. Price question: Where is the BCD-to-Decimal-decoder? The SN-74141 did not exist yet at that time.
Below the upright posed display block: A ring counter built from cold cathode relay tubes (Thyratrons).