Exhibit 12.12


              CONSENT OF INDEPENDENT CERTIFIED PUBLIC ACCOUNTANTS


We hereby consent to the use, in Amendment No. 1 to the  Registration  Statement
on Form SB-2,  of our report dated  February 28, 1997,  except for Note 12 as to
which  the date is April  25,  1997  relating  to the  financial  statements  of
ProtoSource  Corporation  for the years ended December 31, 1996 and 1995 and the
reference to our firm under the caption "Experts" in the Prospectus contained in
said Registration Statement.



                                                  /s/ Angell & Deering
                                                  ------------------------------
                                                  Angell & Deering 
                                                  Certified Public Accountants


Denver, Colorado
February 6, 1998