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2026 / 10 / 07

About Data Bus

A data bus is the set of connections within the CPU, memory, and peripherals used to carry data. Quite possibly the single most important development in modern bus history is the shift from wide parallel buses (ISA, original PCI, parallel SCSI) to high-speed serial buses (PCIe, SATA, USB) in the early to mid 2000s. Since then, the evolution of high-speed serial databuses has focused on signal integrity, protocol convergence, and architectural scale. Automotive and transportation are currently among the largest markets due to the large number of electronic control units, such as engine control, ADAS, ABS, airbags, power steering, as well as EV battery management.

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