EXHIBIT 21 SUBSIDIARIES OF EXECUTONE INFORMATION SYSTEMS, INC. JURISDICTION OF % NAME INCORPORATION OWNERSHIP BUSINESS Unistar Gaming Corporation Delaware 100% Holding Company UniStar Entertainment, Inc. Idaho 100% Lottery Management All listed subsidiaries do business only under their corporate names listed above. Certain inactive and immaterial subsidiaries, which if considered in the aggregate as a single subsidiary would not constitute a "significant subsidiary" as defined in Rule 1-02(w) of the Commission, as of December 31, 1997, are not listed.