A New Method of Generating Functions of Several Variables Using Analog-Digital Combined Circuits

Abstract

In this paper the authors present a new method of generating arbitrary functions of several variables. In this method the input variables are quantized to digital values, which are used as addresses to read out the values of functions from digital memories. The analog remainder of quantization are used to carry out interpolation for the generation of functions.
The numbers and accuracy of partial circuits and the capacity of memory required for this generator are discussed.
This method does not require a large quantity of memory and highly accurate interpolating circuits to generate the functions with high accuracy. The results of experiments confirmed the above discussion and showed the inherent advantage of high speed obtained by the use of pure electronic circuits. The flexibility of this function generator enables to treat multiple-valued functions, discontinuous functions and others which are difficult to be generated by conventional manners.