| 摘要 |
A trade item sales data processing device (1) includes an electronic tag dat a memory (42) and a trade item buffer (41). If an electric tag data memory (42 ) does not contain the same data as the electronic tag data read by an electronic tag reader (2), the electronic tag data which has been read is added to the electronic tag data memory (42). An input mode and a cancel mod e can be switched from one to the other. When the mode is switched to the canc el mode, the electronic tag data memory (42) is cleared. When the input mode is selected, trade item sales data is acquired according to the electronic tag data added to the electronic tag data memory (42) and is added to the trade item buffer (41). When the cancel mode is selected, the trade item sales dat a which can be obtained according to the electronic tag data added to the electronic tag data memory (42) is deleted from the trade item buffer (41).< /SDOAB>
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