Exhibit 23.1 CONSENT OF INDEPENDENT AUDITORS We consent to inclusion in this Registration Statement on Form SB-2 of our report dated July 15, 1996 (with respect to Note A December 20, 1996). We also consent to the reference to our firm under the caption "Experts" in the Prospectus. RICHARD A. EISNER & COMPANY, LLP Cambridge, Massachusetts December 20, 1996