| 摘要 |
PURPOSE:To easily realize the expression of approximation of a curve, by performing the operation of interpolation in a shorter period than a revised period and adding the increment or decrement obtained through this interpolating operation to an analog output information value applied at each revised period. CONSTITUTION:After analog output information supplied via a coupling section 32 in a revised period is picked up at the revised period and temporarily stored at a storage section 34, interpolation operation is performed at an operation processing section 33 at the operating period being a fraction of the revised period. The increment or decrement of output at each operating period is calculated and this increment or decrement is added to the analog output information at the revised period. The result of addition is outputted as an analog output signal to an external device 36 via a process input and output section 35. Thus, independently of the revised period of an upper-order device 31, the expression of approximation of a curve can be realized easily. |
