| 摘要 |
When information from input/output devices is requested by application software, a timer sets a predetermined sleep time period, and when the sleep time period expires, it is checked whether the information has been obtained. The sleep time period is suitably set in consideration of the response speed of the input/output devices and the influence of the delay on the processing. Accordingly, the sleep mode is entered while waiting for an input/output response, thus reducing electric power consumption.
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