Minicomputer and syringe: what they have in common

1. Step 1. Minicomputer — evolved into — Personal computer. Shrinking the computer to desktop size.
2. Step 2. Personal computer — has part — Microprocessor. The PC became possible thanks to the microprocessor.
3. Step 3. Microprocessor — is part of — Insulin pump. A dosing controller.
4. Step 4. Insulin pump — uses — Insulin. It doses insulin.
5. Step 5. Insulin — uses — Syringe. Injections.

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