| 摘要 |
<p>PURPOSE:To omit the exchange of a microcomputer unified with a program memory which processes the information data at change of the length of the information data by dividing a memory into a data part and an index part. CONSTITUTION:Each of memories 20 and 21 includes a data part where plural pieces of information data of variable lengths corresponding to plural code numbers are written in response to each address and an index part where the head or end address of said data part is written. Therefore it is just required to write the head address of the changed information data into the corresponding address of the index part in case the contents of the information data are changed. Then a microcomputer 18 is just required to read out the head address stored after the corresponding address of the index part in case the changed information data is read out. thus it is possible to change the length of the information data with no exchange of the microcomputer 18.</p> |
