Forgotten PC History

[Eric Smith]

schwepes at moog.netaxs.com wrote:
> The 8008 was only introduced a year after the 4004 which was
> introduced in 1971.  I can't find a pin out for either of them
> but I suspect that they might be pin compatable so that the
> upper four bits would be simply not used if the 8008 was put
> in a system designed for a 4004.

Not even close.  The bus works significantly differently.