| 摘要 |
<p>PROBLEM TO BE SOLVED: To attain noise reduction of a cooling fan by controlling the number of rotation of the cooling fan of a computer device. SOLUTION: An auxiliary storage device 12 stores data necessary for the arithmetic operation of a computer circuit 14 or the arithmetic result, while an input and output monitoring circuit 13 monitors an input signal outputted by an inputting device 11 and a signal between a computer circuit 14 and the storage device 12, and issues an output signal to the computer circuit 14 when the input and output signal are not changed for a certain time or the signal is changed. The computer circuit 14 receives the signal from the input and output monitoring circuit 13, detects the change of the input and output signal from this peripheral equipment, and outputs a signal for determining the number of low speed/high speed rotation to a cooling fan 16. Thus, it is possible to suppress a noise generated when the cooling fan 16 cools a computer device 10.</p> |
