Victor MEC calculators from the early 1970's

[Adam Vaughn]

(08-29-2015 05:45 PM)Don Shepherd Wrote:  

(08-26-2015 12:27 AM)Katie Wasserman Wrote:  I'm pretty sure that these are Panaplex displays. The same type used in the HP 9815, in the Compucorp/Monroe 3XX series and several other calculators from mid 1970's.

Thanks Katie, I think you are right.

This guy called it a Panaplex display, but this other guy called it a VFD, but he didn't even know what keys it had, so I should not have believed him for display type.

Ah, the Internet ...

Yep, the three calculators in the OP are definitely Panaplex-based. About the only other display technology they could be based around would be Numitron, but I don't think those were too widely used in calculators, for some reason.
-Adam