EXHIBIT 23.1
 
              CONSENT OF INDEPENDENT CERTIFIED PUBLIC ACCOUNTANTS
 
We have issued our report dated October 24, 1997 accompanying the consolidated
financial statements and schedule of Allied Digital Technologies Corp. and
subsidiaries contained in the Registration Statement and Prospectus. We consent
to the use of the aforementioned report in the Registration Statement and
Prospectus, and to the use of our name as it appears under the caption
'Experts.'
 
                                          GRANT THORNTON LLP
 
Melville, New York
June 4, 1998