| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To smoothly perform a registering task after the generation of an error. <P>SOLUTION: This merchandise sales registering device is provided with a task executing means for executing the task of one step by combining a numerical key input and an operation key input, an error detecting means for detecting whether or not any input error is generated when the task is advanced by the task executing means, an error content display means for displaying the content of the error and a restoring means for restoring a status immediately before the generation of the error when the error is generated. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
