Complex sentence: Wang used a 16-bit data bus instead of the 8-bit data bus used by IBM, arguing that applications would run much faster since most operations required I/O (disk, screen, keyboard, printer).
Split into simpler sentences: Wang used a 16-bit data bus instead of the 8-bit data bus used by IBM. Wang argued that applications would run much faster since most operations required I/O (disk, screen, keyboard, printer).