| 摘要 |
<p>PURPOSE:To use effectively an area used for data storage in a memory in accordance with the quantity of data to be stored by storing data successively in accordance with numbers added to corresponding classification keys and controlling data input/output by the number of end codes and the number of dummy codes. CONSTITUTION:Data corresponding to each classification key of matrix keys 6 has a data number. Data corresponding to individual classification keys are stored successively in a RAM 18 in accordance with their data numbers. In this case, specified codes are inputted and set in parts, where data is not inputted, as dummy codes and in the last positions of parts, where data is inputted, as data end codes. Data in addresses inputted from an address counter 19 are inputted to and outputted from a CPU 11 in accordance with a read/write signal from the CPU 11. Specified code data such as end codes and dummy codes in input/output data are detected by a code detecting circuit 17 in this case to transmit the detection signal to the CPU 11.</p> |
