**Harvard Architecture** Computer, Harvard architecture, diagram, digital circuit, wires, microprocessor, CPU, memory, bus, control unit, arithmetic logic unit, registers, instruction register, program counter, stack pointer, flags, clock, motherboard, chips, electronic components, futuristic, neon lights, dark background, low-key lighting, detailed texture, metallic reflections. **Von Neumann Architecture** Computer, Von Neumann architecture, diagram, digital circuit, wires, microprocessor, CPU, memory, bus, control unit, arithmetic logic unit, registers, instruction register, program counter, stack pointer, flags, clock, motherboard, chips, electronic components, futuristic, neon lights, dark background, low-key lighting, detailed texture, metallic reflections, 3/4 composition, slight blur effect.