Tragbares elektronisches Gerät

摘要

A portable electronic device comprises a control section comprising CPU (22) and ROM (14) which turn off a power (21) if a keyboard (13) has not been operated for a predetermined period of time, set whether the power is to be turned off, and set the predetermined period of time in which the power is turned off. The ROM (14) saves data which is being processed when the power is turned off, even after the power is turned off. The CPU (22) enables the process which is interrupted when the power is turned off to be resumed, on the basis of the data stored in the ROM (14) and determines whether to resume the process which is interrupted when the power is turned off.