AGREEMENT REQUIRED BY RULE 13d-1(f) Each of the undersigned agrees that this Schedule 13D is being filed on behalf of each of them. SCANA CORPORATION

                                                            



                                                   Exhibit I   

                     AGREEMENT REQUIRED BY
                         RULE 13d-1(f)


     Each of the undersigned agrees that this Schedule 13D is being
filed on behalf of each of them.


                          SCANA CORPORATION


                      By:  s/▇▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇▇▇▇              
                     Its: President                            
                    Date: July   , 1997



                          SCI SYSTEMS, INC.


                      By:  s/▇▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇▇▇▇              
                     Its: President                            
                    Date: July   , 1997