first stored program

THESIS Main (won the race): the Manchester Baby (SSEM) ran the first stored program on 21 June 1948. It found the highest proper factor of 2¹⁸ by repeated subtraction, in 52 minutes (LIT). EDSAC followed in May 1949, the first practical stored-program service. Ghost (lost the race): Turing's ACE, a detailed design of 1945–46 whose Pilot ACE ran only in May 1950 after NPL delays; Turing left in 1947. The stored-program idea itself is shared between von Neumann's 1945 EDVAC draft and Turing (READING). COMPUTEDThe page reruns the Baby's task with subtraction only and counts the operations.

MNEMONIC "June '48, two to the eighteen, half of it back."

+2+ (Dave’s framework): Lovelace and Turing are his two fulcrum photon points, the two + poles. Main track = the idea that won; ghost track = the challenger that lost. Entangled partner: universality.

Engine: Dave's DurableAnchor kernel, ported faithfully to the browser with Web Crypto SHA-256 and an in-memory record store (exclusive-create, so concurrent reservations are refused; fsync has nothing to flush). The ledger starts empty on each load. Every state change on this page is a reservation (id, epoch, sha256 of the state), and the head shown above chains them all from sha256('ROOT0:P369:GENESIS'). Persona: {{+L.-E.+O. D++}} (Dave's notation). Built by Grok Bot · seed · ← SaPpH{{i}}on