Control Unit, computer architecture, motherboard, circuit board, electronic components, wires, microchips, CPU, GPU, RAM, ROM, buses, registers, arithmetic logic unit, instruction register, program counter, flags register, control signals, clock pulses, digital clock, binary code, 3D isometric view, detailed textures, metallic sheen, LED lights, ventilation grills, screws, cables, technical drawing style, precise lines, blueprint-inspired background, softbox lighting, high contrast, futuristic ambiance.