| 摘要 |
PURPOSE:To execute the graph displaying of the optional function formula with a very small number of the key operation by inputting the optional function formula, inputting the scope data to respective functions of respective function formulas, executing automatically the functional operation and displaying to the displaying part. CONSTITUTION:Scope data to respective variables of the optional function formulas inputted from a key input part 1 are read to an arithmetic part 5 after the data are written to respective addresses of a formula buffer 7 indicated by an executing pointer 4. The arithmetic part 5 executes the operation of the function formula outputted from the buffer 7 by using respective registers 3A-3N, reads the data for the graph display from a memory part 3 and sends it to a graph displaying buffer 6A at the time of executing the operation. When usual numeric displaying, etc., are executed, the data for the purpose are sent to a text displaying buffer 6B. Thus, the functional operation is automatically executed, the graph is displayed through a displaying buffer, thereby,the graph displaying of the optional function formula is executed by a very small number of the key operation.
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