7. An electronic device comprising: a display unit; a handwriting input unit which accepts a handwriting input according to a user operation; a storage unit which stores a plurality of entry words and explanatory information on each of said plurality of entry words in such a manner that the former corresponds to the latter in a one-to-one correspondence; and a control unit which: causes an arbitrary entry word and explanatory information corresponding to the entry word stored in the storage unit to be displayed on the display unit according to a user operation, accepts a handwriting input corresponding to a user operation with the handwriting input unit in a state where an arbitrary entry word and explanatory information corresponding to the entry word have been displayed on the display unit, causes the handwriting input information accepted by the handwriting input unit to correspond to the entry word displayed on the display unit and stores the resulting information as an entry memo into the storage unit, displays in list form the entry memos stored in the storage unit on the display unit, reads out entry words from the storage unit, the entry words corresponding to an entry memo selected from the entry memos displayed in list form by a user operation and displays the entry words in list form, and reads out an entry word selected from the entry words in list form by a user operation and explanatory information of the entry word from a plurality of entry words and explanatory information thereof stored in the storage means, and displays the entry word and explanatory information on the display unit.
7. An electronic device comprising: a display unit; a handwriting input unit which accepts a handwriting input according to a user operation; a storage unit which stores a plurality of entry words and explanatory information on each of said plurality of entry words in such a manner that the former corresponds to the latter in a one-to-one correspondence; and a control unit which: causes an arbitrary entry word and explanatory information corresponding to the entry word stored in the storage unit to be displayed on the display unit according to a user operation, accepts a handwriting input corresponding to a user operation with the handwriting input unit in a state where an arbitrary entry word and explanatory information corresponding to the entry word have been displayed on the display unit, causes the handwriting input information accepted by the handwriting input unit to correspond to the entry word displayed on the display unit and stores the resulting information as an entry memo into the storage unit, displays in list form the entry memos stored in the storage unit on the display unit, reads out entry words from the storage unit, the entry words corresponding to an entry memo selected from the entry memos displayed in list form by a user operation and displays the entry words in list form, and reads out an entry word selected from the entry words in list form by a user operation and explanatory information of the entry word from a plurality of entry words and explanatory information thereof stored in the storage means, and displays the entry word and explanatory information on the display unit. 8. The electronic device according to claim 7 , further comprising a character input unit which inputs characters; wherein the storage unit further stores a plurality of keywords, and wherein the control unit: determines whether the keywords stored in the storage unit are included in the handwriting input information, and, when it has been determined that the keywords are included in the handwriting input information, causes the handwriting input information to correspond to the entry word displayed on the display unit and its keyword and stores the resulting information as an entry memo, and displays in list form an entry memo stored in the storage unit in such a manner that the entry memo corresponds to a keyword coinciding with character information input by the character input unit.