Re: serial bus?
No. A parallel bus sends the bits of a data byte/words in parallel at the same time over seperate physical wires in the connector. Which sounds like a great idea and it is - up to a certain length. Then slight differences in the makeup of each individual wire means that the bit signals all travel at slightly different speeds start getting out of sync with each other and after only a few 10s of metres it stops working altogether. Which is why serial buses took over.