ALU unit, digital circuitry, futuristic motherboard, metallic blue PCB, intricate copper wires, microchips, CPU components, motherboards with capacitors, resistors, and inductors, 3D render of internal mechanisms, neon-lit background, high-tech laboratory setting, close-up shot of ALU gates, precise details of transistor structures, futuristic ambient lighting, depth of field, realistic textures, cinematic composition.