It's perfectly possible to build very devistating weapons without computers. For example Little Boy & Enola Gay; and Fat Man and Bockscar. The Uranium, Plutonium, and Hydrogen bombs we're built without and do not contain computer. Ditto for the P38, B29, F104, &c.
Software makes our world go round, but it's not a necessity.
Software makes our world go round, but it's not a necessity.