Over half of all European     households now own a computer. But with their scanners, printers and modems,     personal computers can account for up to 20% of household electricity     consumption. Manufacturers, encouraged by the European Commission, are     therefore looking for ways to make their products consume less energy.     Consumers have a role to play too. They can buy products with the Energy     Star logo for their superior energy efficiency and can develop certain     elementary good habits, like switching off devices when not in use.    However, the ... 
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