| 摘要 |
PURPOSE:To effectively decide the true and falsehood of a card by reproducing first and second information recorded on the card, executing a prescribed arithmetic processing and deciding the true and falsehood of the card. CONSTITUTION:The card 1 has a ROM part 2 and a recording part 3, a consecutive number Y is recorded in the ROM part 2 and an index number X is recorded in the recording part 3. The number Y read from the ROM part 2 by a reading optical system 9 is written in a memory 11 through a decoder 10. The number X read from the recording part 3 by the optical system 9 is written in a memory 12 through the decoder 10. The number Y of the memory 11 is supplied to an arithmetic processing circuit 13 and an f(Y) is operated by the circuit 13. Then, the number X written in the memory 12 and the output f(Y) of the circuit 13 are compared in a decision circuit 14 to decide the true and the falsehood. Namely, at the time of X=f(Y), the card is decided to be true and at the time of Xnot equal to f(Y), the card is decided to be false. |
