Yes, I think it was, but that was also b/c, IIRC, the pregnancy tester had a CPU, too. A CPU can actually run things.

DNS … cannot, and that's why the person upthread is criticizing the use of the word "run" here. DNS ran nothing.

No it wasn't, it just was the display. My commented example in this thread states that in every device your are running Zork I-III or any z-machine v3 compatible game it's actually hosting the interpreter and the game itself, from the Game Boy to an smartphone, a PC, an old PDA...

It wasn’t even the test’s original display, IIRC; they just re-used the housing and inserted a fancier display.

They replaced both the display and the microcontroller with something like an Adafruir Trinket.