Daniel Terdiman (via John Gruber): On April 10, 1978, the contract was signed. For $13,000 — $5,200 up front, and $7,800 on delivery, and no additional royalties — Shepardson Microsystems would build Apple’s first DOS — and hand it over just 35 days later. […] For its money, Apple would get a file manager, an … Continue reading Apple DOS