| 摘要 |
PURPOSE:To improve considerably the operability of input, by referring to a variable memory to display variable names, for which variable data are substituted, and variables names, for which variable data are not substituted, distinctively from each other. CONSTITUTION:Contents stored in a dictionary memory 6 are read out by a search circuit 7 and are written to an RAM10. The RAM10 is divided to a formula area 10a and a modified formula area 10b. Addresses of the RAM10 are designated by an address circuit 11, and read-out data are sent to an instruction decoder 13 and a work memory 14. The decoder 13 decodes data from the RAM10 and not only gives the decoded output to an operation processing circuit 9, the circuit 11, and the memory 14 but also inputs the decoded output to a variable memory 15. The memory 15 is provided with a variable name area and a flag area, and data is written in each area through a controlling part 5 and the device 9 when a variable key 4 is operated. The memory 14 is controlled by the decoder 13. |
