| 摘要 |
PURPOSE:To eliminate a danger such as the robbery of data, the damage of the data due to a transmission by executing an arithmetic processing without externally inputting and outputting the data. CONSTITUTION:When instruction data from a card reader/writer is a division command, a control element 15 reads an area number N to a first arithmetic data added to the instruction data and the data B from the address of a data memory 16 corresponding to a record number (n). Then, the control element 15 divides the read data B by the data C as a second arithmetic data added to the instruction data and the data A as a division result is written in the address of the data memory 16 corresponding to an area number M, a record number (m) to an arithmetic result added to the instruction data. Thereby, the external input and output of the data is eliminated, the danger of the robbery of the data and the damage of the data due to the transmission can be eliminated to execute a processing to one command and simplify the processing. |
