Just to clarify for those that don't know ARMs history, Acorn were building computers and designing CPUs before they spun out the CPU design portion.
Apple did not help them design the CPU/Architecture, that was a decade of design and manufacturing already, they VC'ed the independence of the CPU. The staffing and knowledge came from Acorn.
Oh, I was just wanting to clarify the "Apple co-founded".
They had the Newton project, found ARM did a better job than the other options, but there were a few missing pieces. They funded the spun out project so they could throw ARM a few new requirements for the CPU design.
As a "cofounder" of ARM, they didn't contribute technical experience and the architecture did already exist.
Apple did not help them design the CPU/Architecture, that was a decade of design and manufacturing already, they VC'ed the independence of the CPU. The staffing and knowledge came from Acorn.