July 20 (Reuters) - Spectra7 Microsystems Inc SEV.V :
* SPECTRA7 ANNOUNCES CHANGE TO CFO
* SPECTRA7 MICROSYSTEMS INC - DARREN MA HAS TENDERED HIS RESIGNATION AS CFO EFFECTIVE AS OF JULY 24
* SPECTRA7 MICROSYSTEMS INC - DAVE MIER HAS AGREED TO SERVE AS INTERIM CFO