If you wanted to expand the definition of “processor” to electromechanical contraptions, the Friden SRQ could perform square roots using just additions and shif

If you wanted to expand the definition of “processor” to electromechanical contraptions, the Friden SRQ could perform square roots using just additions and shifts, with not a single electronic component other than a motor. And since you had to position the decimal points manually, it would _technically_ be an integer operation… Video: https://youtu.be/o44a1ao5h8w https://youtu.be/o44a1ao5h8w