Patent ID: 7062667

Claim:
A computer comprising: an information inputting section operable to input information external to the portable information processing apparatus; a first processing section; a second processing section operable to perform a predetermined process; and a display section operable to display a result of the predetermined process performed by the second processing section, wherein: the first processing section is operable to operate in accordance with a first clock having a first frequency, the second processing section has an operation state, a stop state and a power supply stop state, in the operation state the second processing section operates in accordance with a second clock having a second frequency, in the stop state the second processing section stops operating in accordance with the second clock while the power supply to the second processing section is maintained, in the power supply stop state the power supply to the second processing section is stopped, the first processing section is operable, when the second processing section is in the stop state, to process the information inputted by the information inputting section, to determine whether it is necessary to initiate the second processing section and provide to the second processing section, if necessary, an output for initiating the second processing section and at least part of the information inputted by the information inputting section, the second processing section in the stop state is operable to make a transition from the stop state to the operation state based on the output for initiating the second processing section output from the first processing section, the second processing section in the power supply stop state is operable to make a transition from the power supply stop state to one of the stop state and the operation state based on an output from the first processing section, and the second processing section in the operation state is operable to perform the predetermined process based on the at least part of the information output from the first processing section.