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I don't think punched tape or punched card was ever used for a personal computer though. The Altair launched with a cassette tape interface anyway. https://en

• noizejoy 5y ago
  Fair enough, but would it be fair to argue that personal computer is a pricing distinction, rather than a technology distinction? In my mental model, the technology distinction is more between single user and multi-user systems. And arguably that is more a a software differentiator than a hardware difference.