| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To prolong the usage time of a battery-driven calculator. <P>SOLUTION: A calculator comprises a power source monitoring part 5 which measures a residual amount of a battery, a consumption power management TL141 which stores therein components, performances and consumption powers utilized for individual functions, restricted operation information TL142 wherein the function utilized for processing to be executed TA is registered together with priority, a processor 10 which executes an execution management PG12 for realizing the individual functions registered in the limited operation information TL142, and an operation restricting unit 7 which updates the limited operation information TL142. The operation restricting unit 7 judges whether the processing TA can be executed or not based on the buttery residual amount and the consumption power for the processing TA, and, when judging the processing TA cannot be executed, selects, as function intended for alternation, the function having the lowest priority among the functions registered in the restricted operation information TL142, selects, as alternative function, the function utilizing the same component as that of the function intended for alternation and requiring consumption power lower than that for the function intended for alternation, changes the function intended for alternation, which has been registered in the restricted operation information TL142 to the alternative function, and changes its priority to a higher value. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
