SCHEDULE 13G Amendment No. 1 KLA Instruments Corporation common stock Cusip # 482480100 Filing Fee: No Cusip # 482480100 Item 1: Reporting Person - FMR Corp. - (Tax ID: 04-2507163) Item 4: Commonwealth of Massachusetts Item 5: 25,400 Item 6: None Item 7: 1,955,400 Item 8: None Item 9: 1,955,400 Item 11: 8.48% Item 12: HC Cusip # 482480100 Item 1: Reporting Person - Edward C. Johnson 3d - (Tax ID: ###-##-####) Item 4: United States of America Item 5: None Item 6: None Item 7: 1,955,400 Item 8: None Item 9: 1,955,400 Item 11: 8.48% Item 12: IN SCHEDULE 13G - TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO RULE 13d-1(b) or 13d-2(b) Item 1(a). Name of Issuer: KLA Instruments Corporation Item 1(b). Name of Issuer's Principal Executive Offices: 160 Rio Robles San Jose, CA 95134 Item 2(a). Name of Person Filing: FMR Corp. Item 2(b). Address or Principal Business Office or, if None, Residence: 82 Devonshire Street, Boston, Massachusetts 02109 Item 2(c). Citizenship: Not applicable Item 2(d). Title of Class of Securities: Common Stock Item 2(e). CUSIP Number: 482480100 Item 3. This statement is filed pursuant to Rule 13d-1(b) or 13d-2(b) and the person filing, FMR Corp., is a parent holding company in accordance with Section 240.13d-1(b)(ii)(G). (Note: See Item 7). Item 4. Ownership (a) Amount Beneficially Owned: 1,955,400 (b) Percent of Class: 8.48% (c) Number of shares as to which such person has: (i) sole power to vote or to direct the vote: 25,400 (ii) shared power to vote or to direct the vote: None (iii) sole power to dispose or to direct the disposition of: 1,955,400 (iv) shared power to dispose or to direct the disposition of: None Item 5. Ownership of Five Percent or Less of a Class. Not applicable. Item 6. Ownership of More than Five Percent on Behalf of Another Person. Various persons have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, the common stock of KLA Instruments Corporation. No one person's interest in the common stock of KLA Instruments Corporation is more than five percent of the total outstanding common stock. Item 7. Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on By the Parent Holding Company. See attached Exhibit(s) A, B, and C. Item 8. Identification and Classification of Members of the Group. Not applicable, see attached Exhibit A. Item 9. Notice of Dissolution of Group. Not applicable. Item 10. Certification. By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired in the ordinary course of business and were not acquired for the purpose of and do not have the effect of changing or influencing the control of the issuer of such securities and were not acquired in connection with or as a participant in any transaction having such purpose or effect. Signature After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this Schedule 13G in connection with FMR Corp's beneficial ownership of the common stock of KLA Instruments Corporation at December 31, 1994 is true, complete and correct. February 13, 1995 Date /s/Arthur S. Loring Signature Arthur S. Loring, Vice President Name/Title SCHEDULE 13G - TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO RULE 13d-1(b) or 13d-2(b) Pursuant to the instructions in Item 7 of Schedule 13G, Fidelity Management & Research Company ("Fidelity"), 82 Devonshire Street, Boston, Massachusetts 02109, a wholly-owned subsidiary of FMR Corp. and an investment adviser registered under Section 203 of the Investment Advisers Act of 1940, is the beneficial owner of 1,907,500 shares or 8.27% of the common stock outstanding of KLA Instruments Corporation ("the Company") as a result of acting as investment adviser to several investment companies registered under Section 8 of the Investment Company Act of 1940. Edward C. Johnson 3d, FMR Corp., through its control of Fidelity, and the Funds each has sole power to dispose of the 1,907,500 shares owned by the Funds. Neither FMR Corp. nor Edward C. Johnson 3d, Chairman of FMR Corp., has the sole power to vote or direct the voting of the shares owned directly by the Fidelity Funds, which power resides with the Funds' Boards of Trustees. Fidelity carries out the voting of the shares under written guidelines established by the Funds' Boards of Trustees. Fidelity Management Trust Company, 82 Devonshire Street, Boston, Massachusetts 02109, a wholly-owned subsidiary of FMR Corp. and a bank as defined in Section 3(a)(6) of the Securities Exchange Act of 1934, is the beneficial owner of 23,200 shares or 0.10% of the common stock outstanding of the company as a result of its serving as investment manager of the institutional account(s). Edward C. Johnson 3d and FMR Corp., through its control of Fidelity Management Trust Company, has sole dispositive power over 23,200 shares and sole power to vote or to direct the voting of 700 shares, and no power to vote or to direct the voting of 22,500 Shares of common stock owned by the institutional account(s) as reported above. Edward C. Johnson 3d and Abigail P. Johnson each own 24.9% of the outstanding voting common stock of FMR Corp. Mr. Johnson 3d is Chairman of FMR Corp. Various Johnson family members and trusts for the benefit of Johnson family members own FMR Corp. voting common stock. These Johnson family members, through their ownership of voting common stock and the execution of a family shareholders' voting agreement, form a controlling group with respect to FMR Corp. Fidelity International Limited, Pembroke Hall, 42 Crowlane, Hamilton, Bermuda, and various foreign-based subsidiaries provide investment advisory and management services to a number of non-U.S. investment companies (the "International Funds") and certain institutional investors. Fidelity International Limited is the beneficial owner of 24,700 shares or 0.11% of the common stock outstanding of the company. Additional information with respect to the beneficial ownership of Fidelity International Limited is shown on Exhibit B, page 1. SCHEDULE 13G - TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO RULE 13d-1(b) or 13d-2(b) Pursuant to instructions in Item 7 of Schedule 13G, this Exhibit has been prepared to identify Fidelity International Limited, Pembroke Hall, 42 Crow Lane, Hamilton, Bermuda, a Bermudian joint stock company incorporated for an unlimited duration by private act of the Bermuda Legislature (FIL) and an investment adviser to various investment companies (the "International Funds") and certain institutional investors, as a beneficial owner of the 24,700 shares or 0.11% of the common stock outstanding of KLA Instruments Corporation. Prior to June 30, 1980, FIL was a majority-owned subsidiary of Fidelity Management & Research Company (Fidelity), a wholly-owned subsidiary of FMR Corp. On that date, the shares of FIL held by Fidelity were distributed, as a dividend, to the shareholders of FMR Corp. FIL currently operates as an entity independent of FMR Corp. and Fidelity. The International Funds and FIL's other clients, with the exception of Fidelity and an affiliated company of Fidelity, are non-U.S. entities. A partnership controlled by Edward C. Johnson 3d and members of his family owns shares of FIL voting stock with the right to cast approximately 47.22% of the total votes which may be cast by all holders of FIL voting stock. Mr. Johnson 3d is Chairman of FMR Corp. and FIL. FMR Corp. and FIL are separate and independent corporate entities. FMR Corp. and FIL are