| 摘要 |
PURPOSE:To avoid to erase by mistake cooking information recorded on cards when readout information, by recording the write-in inhibition information on the magnetic card itself. CONSTITUTION:In the key operation of a keyboard 4 of a magnetic card reader/ writer, each data of cooking information of key input is displayed on a display device 5 and stored in an external memory 92 input to a CPU91. After operating the write-in and, if required, inhibition key, when a card 7 is inserted to a card reader 3, if the write-in inhibition code recorded on the card by means of the read-in/ recording exclusive use magnetic head 14 is present, it is read in to inhibit the re- recording to this card and it is changed into new information, in other words, mis- erase is prevented. That is, by only inserting the magnetic card, the inhibition of write-in to a card can be discriminated, thereby avoiding the erase of cooking information desired to be reserved, in error. |
