摘要 |
<p>PROBLEM TO BE SOLVED: To easily estimate a future use quantity of resources such as electricity, gas and city water at home. SOLUTION: The use quantity information is obtained from an electric apparatus 200, a gas apparatus 300 and a city water using apparatus 400 by a central control unit 100, weather information is obtained from a home page 610 on the Internet 600 through a communication network 500, and according to the actual result of the past use and the weather information, a future use quantity is estimated and displayed on a display screen 120.</p> |