Computing as we know it (post Moore's law) depends on semiconductor technology. It is quite a stretch to suppose that, if Babbage had produced a working device,

Computing as we know it (post Moore's law) depends on semiconductor technology. It is quite a stretch to suppose that, if Babbage had produced a working device, then the period of Moore's law expansion would have occurred 100 years earlier, given that it depended on the development of semiconductor devices, which in turn depended on developing a quantum theory of condensed matter.