{"schema": "too.foo.history.image-prompt.v1", "slug": "1949-05-06-edsac-the-first-practicable-stored-program-computer-runs-its-first-pr", "release": "4b157fe58dc3a255", "image_key": "1949-05-06-edsac-the-first-practicable-stored-program-computer-runs-its-first-pr", "image_sha256": "44a4fd3d61c97cd2d4241b0039cb193a6c262e170d0475a72d3bad0ffb35f053", "job": "20260827-004333-tier2", "model": "Ideogram 4 (fp8)", "preset": "V4_DEFAULT_20", "steps": 20, "seed": 20260823, "width": 1216, "height": 832, "caption_mode": "json", "caption": {"high_level_description": "EDSAC's rack circuits operate while its electromechanical teleprinter hammers a fresh paper sheet forward mid-output; exactly four 1.6 m mercury delay tanks of the first battery remain connected beside the racks as Beatrice Worsley watches. University of Cambridge Mathematical Laboratory on 6 May 1949; cramped machine room with open steel electronics racks, a timber equipment table and scuffed floorboards, cropped at working height around the output apparatus. All rack feet and the first-battery frame stand on the laboratory floor; each mercury tube is secured between two end clamps. Short leads connect each tank's end fittings to the adjacent first-battery chassis. The teleprinter's feet rest on the equipment table, and all four table legs meet the floorboards. The output sheet is pinched between platen and feed rollers while one typebar physically contacts its face at the captured instant. The output cable plugs into both the lower EDSAC chassis and teleprinter socket, sagging onto the floor under its own weight. Worsley's right fingers curl around the table edge and both shoes meet the floorboards; her body partly occludes the tank frame at right. The four mercury tanks are each 1.6 m long, nearly matching the standing adult comparator; the rack bays rise about 1.9 m. It is 6 May 1949: One Cambridge researcher in a calf-length wool skirt, blouse, cardigan and low leather shoes, seen from the rear.; Painted steel racks, thermionic valves, cotton-insulated wiring, steel mercury tanks, black-enamel teleprinter, cream paper and timber floorboards.; EDSAC stored-program circuitry with four active ultrasonic mercury tanks in battery one and electromechanical teleprinter output at about 6 2/3 characters per second. Electronic calculation remains physically unseen; success is evidenced by the moving teleprinter carriage, advancing sheet and connected four-tank memory assembly.", "style_description": {"aesthetics": "quiet technical confirmation. Documentary photographic realism: subtle film grain, believable wear on every material, candid imperfect framing.", "lighting": "Single tall laboratory window at camera-left supplies diffuse daylight; metal highlights and every cast shadow run softly rightward across machinery, Worsley and floor.", "photo": "40mm, f/4, 4 m working distance, Archival black-and-white documentary photograph, asymmetric machine-level view; teleprinter and sheet sharp near lower center, Worsley's near shoulder and rear rack cavities progressively softer.", "medium": "photograph, Freeze the typebar at paper contact while retaining slight lateral motion blur on the carriage and free paper edge.", "color_palette": ["#1E1913", "#4A3B28", "#8A7350", "#C9B892", "#2B2B2A"]}, "compositional_deconstruction": {"background": "University of Cambridge Mathematical Laboratory on 6 May 1949; cramped machine room with open steel electronics racks, a timber equipment table and scuffed floorboards, cropped at working height around the output apparatus. Single tall laboratory window at camera-left supplies diffuse daylight; metal highlights and every cast shadow run softly rightward across machinery, Worsley and floor.", "elements": [{"type": "obj", "bbox": [40, 20, 830, 620], "desc": "Four of EDSAC's twelve open steel rack bays, about 1.9 m high, hold irregularly spaced valve chassis, resistors and cotton-insulated wiring; left base paint is heel-scuffed."}, {"type": "obj", "bbox": [120, 480, 470, 980], "desc": "Exactly four connected 1.6 m steel mercury tubes, each 25 mm diameter, lie horizontally in the first-battery frame, clamped at both ends; dull surfaces carry localized handling smudges."}, {"type": "obj", "bbox": [500, 400, 850, 760], "desc": "Black-enamel electromechanical teleprinter on a waist-high timber table; carriage moves laterally as one typebar strikes and the platen ratchet advances the sheet one notch."}, {"type": "obj", "bbox": [450, 520, 700, 730], "desc": "One cream sheet curves tightly around the platen under roller tension, viewed almost edge-on with its output face aimed away from camera; free edge trembles with feed motion."}, {"type": "obj", "bbox": [180, 760, 950, 1000], "desc": "At frame-right in calf-length wool skirt, blouse and cardigan, rear three-quarter view; right hand closed around table edge as she watches the moving carriage."}, {"type": "obj", "bbox": [650, 330, 950, 900], "desc": "Stout timber table with four square legs planted on floorboards; camera-left edge rubbed smooth beside the teleprinter base."}, {"type": "obj", "bbox": [820, 0, 1000, 1000], "desc": "Dark timber floorboards carrying an irregular scuffed arc beneath the table, with the nearest boards softened by shallow focus."}, {"type": "obj", "bbox": [600, 360, 900, 620], "desc": "One braided cable leaves the lower EDSAC chassis, sags under gravity, rests briefly on the floor, then rises into the teleprinter's rear socket."}]}}, "rendered_input": "{\"high_level_description\": \"EDSAC's rack circuits operate while its electromechanical teleprinter hammers a fresh paper sheet forward mid-output; exactly four 1.6 m mercury delay tanks of the first battery remain connected beside the racks as Beatrice Worsley watches. University of Cambridge Mathematical Laboratory on 6 May 1949; cramped machine room with open steel electronics racks, a timber equipment table and scuffed floorboards, cropped at working height around the output apparatus. All rack feet and the first-battery frame stand on the laboratory floor; each mercury tube is secured between two end clamps. Short leads connect each tank's end fittings to the adjacent first-battery chassis. The teleprinter's feet rest on the equipment table, and all four table legs meet the floorboards. The output sheet is pinched between platen and feed rollers while one typebar physically contacts its face at the captured instant. The output cable plugs into both the lower EDSAC chassis and teleprinter socket, sagging onto the floor under its own weight. Worsley's right fingers curl around the table edge and both shoes meet the floorboards; her body partly occludes the tank frame at right. The four mercury tanks are each 1.6 m long, nearly matching the standing adult comparator; the rack bays rise about 1.9 m. It is 6 May 1949: One Cambridge researcher in a calf-length wool skirt, blouse, cardigan and low leather shoes, seen from the rear.; Painted steel racks, thermionic valves, cotton-insulated wiring, steel mercury tanks, black-enamel teleprinter, cream paper and timber floorboards.; EDSAC stored-program circuitry with four active ultrasonic mercury tanks in battery one and electromechanical teleprinter output at about 6 2/3 characters per second. Electronic calculation remains physically unseen; success is evidenced by the moving teleprinter carriage, advancing sheet and connected four-tank memory assembly.\", \"style_description\": {\"aesthetics\": \"quiet technical confirmation. Documentary photographic realism: subtle film grain, believable wear on every material, candid imperfect framing.\", \"lighting\": \"Single tall laboratory window at camera-left supplies diffuse daylight; metal highlights and every cast shadow run softly rightward across machinery, Worsley and floor.\", \"photo\": \"40mm, f/4, 4 m working distance, Archival black-and-white documentary photograph, asymmetric machine-level view; teleprinter and sheet sharp near lower center, Worsley's near shoulder and rear rack cavities progressively softer.\", \"medium\": \"photograph, Freeze the typebar at paper contact while retaining slight lateral motion blur on the carriage and free paper edge.\", \"color_palette\": [\"#1E1913\", \"#4A3B28\", \"#8A7350\", \"#C9B892\", \"#2B2B2A\"]}, \"compositional_deconstruction\": {\"background\": \"University of Cambridge Mathematical Laboratory on 6 May 1949; cramped machine room with open steel electronics racks, a timber equipment table and scuffed floorboards, cropped at working height around the output apparatus. Single tall laboratory window at camera-left supplies diffuse daylight; metal highlights and every cast shadow run softly rightward across machinery, Worsley and floor.\", \"elements\": [{\"type\": \"obj\", \"bbox\": [40, 20, 830, 620], \"desc\": \"Four of EDSAC's twelve open steel rack bays, about 1.9 m high, hold irregularly spaced valve chassis, resistors and cotton-insulated wiring; left base paint is heel-scuffed.\"}, {\"type\": \"obj\", \"bbox\": [120, 480, 470, 980], \"desc\": \"Exactly four connected 1.6 m steel mercury tubes, each 25 mm diameter, lie horizontally in the first-battery frame, clamped at both ends; dull surfaces carry localized handling smudges.\"}, {\"type\": \"obj\", \"bbox\": [500, 400, 850, 760], \"desc\": \"Black-enamel electromechanical teleprinter on a waist-high timber table; carriage moves laterally as one typebar strikes and the platen ratchet advances the sheet one notch.\"}, {\"type\": \"obj\", \"bbox\": [450, 520, 700, 730], \"desc\": \"One cream sheet curves tightly around the platen under roller tension, viewed almost edge-on with its output face aimed away from camera; free edge trembles with feed motion.\"}, {\"type\": \"obj\", \"bbox\": [180, 760, 950, 1000], \"desc\": \"At frame-right in calf-length wool skirt, blouse and cardigan, rear three-quarter view; right hand closed around table edge as she watches the moving carriage.\"}, {\"type\": \"obj\", \"bbox\": [650, 330, 950, 900], \"desc\": \"Stout timber table with four square legs planted on floorboards; camera-left edge rubbed smooth beside the teleprinter base.\"}, {\"type\": \"obj\", \"bbox\": [820, 0, 1000, 1000], \"desc\": \"Dark timber floorboards carrying an irregular scuffed arc beneath the table, with the nearest boards softened by shallow focus.\"}, {\"type\": \"obj\", \"bbox\": [600, 360, 900, 620], \"desc\": \"One braided cable leaves the lower EDSAC chassis, sags under gravity, rests briefly on the floor, then rises into the teleprinter's rear socket.\"}]}}", "prompt_sha256": "a8fd14608e15c1ca5279f743728ee0b259d1b70fa077c4ce5fba5a257c44df1e"}