Ключевые слова: abstract, background, black and white, business, business finance and industry, cable, capacitor, circuit board, color image, communication, computer, computer port card, concept, conformity, connection, copper, data, design, electrical component, electricity, electronics industry, empty, engineering, flowing, fuel and power generation, green color, green technology, horizontal, illustration, industry, innovation, maze, mother board, nature, network server, no people, pattern, plan document, power supply, recycling, recycling symbol, resistor, science, seamless pattern, simplicity, single line, social issues, sparse, technology,