Patent ID: 7228204

Claim:
A motherboard comprising: a the plurality of fan units individually having formed therein a fan, a member fixing a the fan, a thermometry section measuring temperature(s) of a single part or all parts of an equipment, a broadcasting section processing the temperatures measured for a number n of parts of the equipment and then notifying a result of the processing to an exterior through lines in units in multiples of a number n, the number n equal to or smaller than a total number of parts that are measured temperatures by a temperature sensor including at least said thermometry section, a number of the lines being equal to or smaller than n, a controlling section maintaining a rotating speed of the fan at a value determined in advance correspondingly to a processing result notified from the exterior via said lines, a DC circuit outputting whether or not the rotating speed of the fan became lower than a predetermined value, and a second controlling section increasing the rotating speed of the fan according to the condition of the DC circuit: a first wiring forming lines that serially connect, through all said plurality of fan units, each of said DC circuit individually provided in each of said plurality of fan units; and a second wiring formed as a wiring pattern together with said first wiring and corresponding to a bus-shaped line, connecting a part or all of a specific broadcasting section among broadcasting sections individually provided in each of the plurality of fan units, with controlling sections individually provided in all of said plurality of fan units.