To effectively use a battery by forbidding data input from a user at a position of a proper battery residual amount according to data contents input from the user, and to certainly process data input by the user without causing data inconsistency or data losing, in a battery driven information processor.
This battery driven information processor calculates a battery amount necessary to process data received from the user, effectively uses the battery by forbidding the input of the data from the user when a battery residual amount detected by a battery residual amount detection part becomes not more than the calculated battery amount, and can certainly process the data input by the user without causing the data inconsistency or the data losing.
WAKAI RYOHEI
MOTOSAKA KINICHI
HONDA KIYOJI
Hiroki Naito
Daisuke Nagano
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