Ключевые слова: background, block, board, cable, capacitor, cases, circuit, complexity, component, components, computer, computers, computing, connection, design, digital, electrical, electricity, electronics, elements, engineering, equipment, hardware, industry, integrated, iron, kit, manufacturing, mesh, metal, metallic, microcircuit, objects, old, part, parts, pc, plug, power, resistor, semiconductor, signals, steel, supply, switch, technology, telecommunications, unhygienic, wire, wires,