Denominator © 1981 Fabris, Robert.
Denominator is based on an article called Extended Precision Computation by Stephen Rogowski that explains 'how to compute to a practically unlimited number of places with just the memory your micro has on board'.
Published in Arcadian 3, no. 4 (Feb. 07, 1981): 49.
The original article appeared in Creative Computing 6, no. 3 (March 1980): 94-95.