1 Exhibit 23.3 ------------ CONSENT OF INDEPENDENT ACCOUNTANTS We consent to the inclusion in Amendment No. 1 to this registration statement on Form S-3 (No. 33-10663) of our report dated June 12, 1995, on our audits of the financial statemnts of Spider Systems Limited. We also consent to the reference to our firm under the caption "Experts." /s/ COOPERS & LYBRAND Edinburgh, United Kingdom August 23, 1996