Macintosh Workstations

Buses to ride: NuBus, MCA, EISA. Imagine a computer giant like IBM defending its choice of an input/output conductor for its Personal System/2 line of computers with television commercials comparing the innards of a computer to an expressway, packets of data moving like vehicles in traffic scrambling to avoid backups due to obsolete or non‐proprietary architectures. These commercials have appeared in response to the first organized effort by a group of computer manufacturers to circumvent IBM's proprietary Micro Channel Architecture (MCA) with their own design, called EISA (Extended Industry Standard Architecture). Why is there such concern over bus architectures, and how does the Macintosh solution, the NuBus, compare?