The bus in a PC is the common hardware interface between the CPU and peripheral devices. Parallel buses with multiple lines (wires) were superseded by serial versions, which use one line for data.

How the IEC bus can be retrofitted to a KIM-1 system is demonstrated in this video by the Commodore History channel. The Commodore KIM-1 hardware is almost directly compatible with the C64 hardware.

The Bit Block Transfer (BitBLT) Graphics Engine IP Core works in parallel with the TFT LCD Controller IP Core, interfacing a microprocessor and frame buffer memory via the AMBA AXI4 Bus to a TFT LCD ...

The GeForce RTX 5000 is the first line of consumer graphics cards to harness the potential of the PCI-Express 5.0 bus. This new connector offers higher bandwidth but is causing some hardware operation ...