Weakest calculator/pocket computer that can do Tower of Hanoi?

[SlideRule]

Even longer still …

Turing's sword
See you our server farm that hums
And serves HTTP?
It's spun its disk and done its sums
Ever since Berners-Lee.

See you our mainframe spewing out
The Towers of Hanoi?
It's moved recursive disks about
Since Babbage was a boy.

See you our ZX81
That prints the ABCs?
That very program used to run
With Lovelace at the keys.

Magnetic floppy disks and hard,
And tape with patience torn,
And eighty columns on a card,
And so was England born!

She is not any common thing,
Water or Wood or Air,
But Turing's Isle of Programming,
Where you and I will fare.

from Time Blew Away Like Dandelion Seed,
Thomas Thurman

… but finally found it.

BEST!
SlideRule