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                                                                    EXHIBIT 23.1


                       CONSENT OF INDEPENDENT ACCOUNTANTS

We hereby consent to the incorporation by reference in this Registration
Statement on Form S-8 of our report dated January 18, 2000 relating to the
financial statements, which appears in Altera Corporation's Annual Reports on
Form 10-K and Form 10-K/A for the year ended December 31, 1999.


/s/ PricewaterhouseCoopers LLP

San Jose, California
October 9, 2000