Author´s Reply

As R. Reeves points out, use of the SQUARE module can simplify realizations and save on the more expensive TIMES module. (However, the TIMES module requires only 2n inputs, not 7n.) Indeed, my final paragraph in Section VI mentions assignments by Edwards for which the SQUARE module (as well as the FOURTH POWER module, EIGHTH POWER module, etc.) require no logic gates whatsoever. Their usefulness arises precisely for the reason illustrated by Mr. Reeves´ realization shown in his Fig. 1.