THE RECORD
What changed
Intel's 4004, commercialized in 1971, was an early single-chip CPU developed from a calculator project.
EVIDENCE
What remains
Chips, masks, data sheets and Intel-Busicom records document design and commercialization.
WHY IT MATTERS
Why it matters
It enabled mass-produced personal and embedded computing.
OPEN QUESTION
Where interpretation begins
First depends on criteria; the team roles of Faggin, Hoff, Mazor and Shima matter.