The redefinition and some discussion of green computing

The environment of computer systems can be divided into two parts, humanities environment and natural environment. Along with a large number of computer systems have been widely used around the world, they gradually produce some negative effects to environment. As a kind of computing mode centered on the environment, by eliminating the environment-unfriendly aspects of computer systems, Green Computing can enable computer systems, people, society and natural environment in better harmony, and reach the goals of energy-saving, environment-protection and cost-saving. Compared with the research of Green Chemistry, the authors use a more universal and abstract way to redefine Green Computing, and discuss its main research contents, so that the limitation and scope of Green Computing can be ascertained, and the research tasks and relation between the related research fields can be clarified. Then, some basic ideas and general methods of Green Computing are proposed, which are an important fundament to explore some specific models, methods and tools of Green Computing under the various kinds of conditions in the next step.