In this paper we consider minimum feedback loop realizations of synchronous sequential switching circuits. It is shown that any finite state sequential function can be realized as a synchronous sequential circuit with a single feedback loop, or equivalently, as a one-dimensional iterative circuit with one amplifier between stages. Techniques are described which enable us to find such a realization for a given flow table. A simple test procedure is described to determine if a sequential function can be realized as a sequential circuit using its output function as feedback, whether the output is completely or incompletely specified.
['Arthur D. Friedman']
Feedback in Synchronous Sequential Switching Circuits