Electrical Engineering › Section W · Signal conversion and data transmission › Topic W.5
Parallel buses, USB, and serial buses
Inside a computer and between devices, data moves over buses: shared sets of lines with agreed rules. The story of buses is a shift from wide parallel ribbons to fast serial links, and knowing both explains everything from a PC's graphics slot to the two wires that link a sensor to a microcontroller.
In this topic
- What a bus is
- Bus characteristics and protocol
- Worked example: bandwidth of a parallel bus
- Classic parallel buses
- PCI Express
- Worked example: a PCIe link
- The Universal Serial Bus
- SPI and I²C
- RS-232, RS-485, CAN and others
- Bus interfacing
- Common mistakes to avoid
- Key takeaways
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