PROM Function Generator

A function generator based on the ultraviolet-light-erasable, programmable read-only memory (PROM) was developed. The generator can-generate a step-wise approximation to any arbitrary single-valued functional relation between an input signal and an output signal, or between an output signal and time. The input signal or the output signal can be a digital voltage, an analog voltage, or a current. The generator can be expanded by adding several PROMs to obtain more bits of resolution in either the input or the output signal, and it is compatible with either computer or manual control.