1. An information processing device comprising: an input unit receiving a character input; an output unit externally outputting information; and a memory unit storing data, wherein said data contains a plurality of keywords, a plurality of contents, each being associated with at least one of said plurality of keywords, and keyword data in which each of said plurality of keywords is associated with a plurality of character inputs, said information processing device further comprising a processing unit retrieving one of said plurality of keywords corresponding to one of said plurality of character inputs received by said input unit based on said keyword data, and causing said output unit to output one of said plurality of contents corresponding to the retrieved keyword.