HDMI and truck: what they have in common

1. Step 1. HDMI — uses — Bit and information theory. A digital signal.
2. Step 2. Bit and information theory — is used in — CAN bus. A digital bus.
3. Step 3. CAN bus — is used in — Engine control unit. Linking the units.
4. Step 4. Engine control unit — is used in — Anti-lock braking system (ABS). The ABS unit.
5. Step 5. Anti-lock braking system (ABS) — evolved from — Air brake. Anti-skid systems first appeared in aviation and on railways.
6. Step 6. Air brake — is part of — Truck. Air brakes, as on trains.

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