circuit board

abstract background board capacitor card chip circuit clean close closeup communication component computer computers concept conductor connection connections contact control copper cords cpu cybernetics data design detail device digital electric electrical electricity electronic electronics empty energy engineering equipment futuristic green hardware industry inside integrated internet laptop machine macro mainboard micro microchip microelectronics microstructure miniaturization modern motherboard network part parts pattern pc pcb pins power processor repair resistor science semiconductor silicon small smd structure technics technology texture transistor unit voltage