**Von Neumann Architecture** Digital illustration, futuristic laboratory, scientist, middle-aged man, balding hair, glasses, white lab coat, holding a tablet, diagram of Von Neumann architecture, wires, circuits, CPU, memory, bus, ALU, registers, computer chips, motherboard, detailed mechanical parts, neon lights, dark background, high contrast, cinematic composition, shallow depth of field. **Harvard Architecture** Retro-futuristic computing room, 1950s style, woman, short hair, cat-eye glasses, red lipstick, white blouse, pencil skirt, standing in front of a massive computer system, Harvard architecture diagram, vacuum tubes, wires, wooden cabinets, mechanical calculators, vintage computer parts, warm lighting, nostalgic atmosphere, soft focus, shallow depth of field.