EXHIBIT 7 THIS JOINT FILING AGREEMENT (this "Agreement"), dated as of October 8, 1996, is between and among SCI SYSTEMS, INC., a Delaware corporation, and SCI TECHNOLOGY, INC., an Alabama corporation. The parties hereto hereby agree that the Statement...

                EXHIBIT 7


     THIS JOINT FILING AGREEMENT (this "Agreement"),  dated as of October 8,
1996, is between and among SCI SYSTEMS,  INC., a Delaware  corporation,  and SCI
TECHNOLOGY, INC., an Alabama corporation.

         The  parties  hereto  hereby  agree that the  Statement  of  Beneficial
Ownership  on Schedule  13D  relating,  among other  things,  to the  beneficial
ownership by the parties hereto of shares of the Common Stock,  No Par Value, of
Radius,  Inc.,  shall be filed with the Securities  and Exchange  Commission and
delivered to Radius, Inc. on behalf of each of the parties.

         IN  WITNESS  WHEREOF,  each of the  undersigned  have  set  their  hand
hereunto as of this 8th day of October, 1996.

                                            SCI SYSTEMS, INC.



                                            By:_________________________
                                            Name:  Xxxxxxx X. Xxxxxxxx
                                            Title: Secretary

                                            SCI TECHNOLOGY, INC.



                                            By:__________________________
                                            Name:  Xxxxxxx X. Xxxxxxxx
                                            Title: Secretary