Calculator Comparisons

<Of course you can. The exact details are a right fiddle (partly because a <nixie tube is not a diode, so you are going to get sneak paths!), but <basically you sequence the anodes of the tubes to the B+ rail and then <ground the appropriate cathode for each tube. Nixi is a threshold device so there are no sneak paths but the actuation voltages are pretty fussy due to the hystersis. <A _lot_ of calcultors had a multiplexed nixie tube display. It was much <less common in test gear which is why I guess you've not seen it. Really, never saw many that did, the vacuum florescent (bluegreen) were generally mux'ed.. <You want to look at the 7441, and 74141. I seem to recall there being a <TTL chip with counter, latch(?) and nixie driver all in one package. I <can't remember the number but it was a 7414-something (74142/74143???) 74142 is the nixi (Counter, latch, decoder) and the 143 is the led/lamp seven segement. 74141 is an pmproved 7441 and likely easier to find. <And no, they don't seem to be in the more recent TTL databooks I have <here :-(. I think there are still plenty about (if only in the junkboxes <of people on this list :-)) My Ti data books have them (ca1976) as do the reference TI set from the mid 80s. I'd expect they can be found easily enough. Allison