Hitachi, Ltd.

Hitachi Computer Engineering Co., Ltd.

Kimikazu Sato

Katsumi Yoshida

Takeshi Saitou

Shigenori Takagi

Ikuo Shimanuki

A POS terminal device which performs the function of a cash register upon input of a commodity code, with date and hour data included in the commodity code being checked at the time of data input and a caution indication that the term of validity has expired or the term of validity is approaching. The POS terminal device comprising time measuring device, input device for inputting a commodity code including date and hour data, judgment step for comparing date and hour data indicated by the time measuring device with date and hour data included in a commodity code inputted by the input device, and caution device, whereby in the case where the date and hour data indicated by the time measuring device represents a time not earlier than that represented by the date and hour data included in the commodity code as a result of comparison in the judgment step, and which informs an operator about that fact.

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Hadano, Japan

Kimikazu Sato