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EXHIBIT 23.1
CONSENT OF ERNST & YOUNG, INDEPENDENT AUDITORS
We consent to the incorporation by reference in the Registration Statement on
Form S-8 pertaining to the 1996 Stock Option Plan of TMT, Inc. (as assumed by
Credence Systems Corporation), of our report dated November 24, 1999, with
respect to the consolidated financial statements and schedule of Credence
Systems Corporation included in its Annual Report on Form 10-K/A for the year
ended October 31, 1999 filed with the Securities and Exchange Commission.
/s/ ERNST & YOUNG LLP
San Jose, California
June 1, 2000
