Data I/O Corporation Watch

from SC 13D/A 1 page <page> Exhibit 1 Joint Filing Agreement in Accordance With Rule 13d-(F) Promulgated Under the Securities Exchange Act of 1934, as Amended, the Undersigned Hereby Agree to the Joint Filing With All Other Reporting Persons (As Such Term Is Defined in the Schedule 13d Referred to Below) on Behalf of Each of Them of a Statement on Schedule 13d (Including Amendments Thereto) With Respect to the Common Stock. No Par Value (The "Common Stock"), of Data I/O Corporation, a Washington Corporation, and That This Agreement Be Included as an Exhibit to Such Joint Filing. This Agreement May Be Executed in Any Number of Counterparts, All of Which Taken Together Shall Constitute One and the Same Instrument. in Witness Whereof, the Undersigned Hereby Execute This Agreement as of September 20, 1999. /S/ Glen F. Ceiley Glen F. Ceiley Bisco Industries, Inc. /S/ Glen F. Ceiley Name: Glen F. Ceiley Title: President Bisco Industries, Inc. Profit Sharing and Savings Plan /S/ Glen F. Ceiley Name: Glen F. Ceiley Title: Trustee /S/ Matthew Ceiley Matthew Ceiley /S/ Zachary Ceiley Zachary Ceiley Family Steak Houses of Florida, Inc. /S/ Glen F. Ceiley Name: Glen F. Ceiley Title: Chairman Page 18 of 18 Pages

from SC 13D/A 1 page <page> Exhibit 1 Joint Filing Agreement in Accordance With Rule 13d-(F) Promulgated Under the Securities Exchange Act of 1934, as Amended, the Undersigned Hereby Agree to the Joint Filing With All Other Reporting Persons (As Such Term Is Defined in the Schedule 13d Referred to Below) on Behalf of Each of Them of a Statement on Schedule 13d (Including Amendments Thereto) With Respect to the Common Stock. No Par Value (The "Common Stock"), of Data I/O Corporation, a Washington Corporation, and That This Agreement Be Included as an Exhibit to Such Joint Filing. This Agreement May Be Executed in Any Number of Counterparts, All of Which Taken Together Shall Constitute One and the Same Instrument. in Witness Whereof, the Undersigned Hereby Execute This Agreement as of September 20, 1999. /S/ Glen F. Ceiley Glen F. Ceiley Bisco Industries, Inc. /S/ Glen F. Ceiley Name: Glen F. Ceiley Title: President Bisco Industries, Inc. Profit Sharing and Savings Plan /S/ Glen F. Ceiley Name: Glen F. Ceiley Title: Trustee /S/ Matthew Ceiley Matthew Ceiley /S/ Zachary Ceiley Zachary Ceiley Family Steak Houses of Florida, Inc. /S/ Glen F. Ceiley Name: Glen F. Ceiley Title: Chairman Page 18 of 18 Pages

from SC 13D/A 1 page <page> Exhibit 1 Joint Filing Agreement in Accordance With Rule 13d-(F) Promulgated Under the Securities Exchange Act of 1934, as Amended, the Undersigned Hereby Agree to the Joint Filing With All Other Reporting Persons (As Such Term Is Defined in the Schedule 13d Referred to Below) on Behalf of Each of Them of a Statement on Schedule 13d (Including Amendments Thereto) With Respect to the Common Stock. No Par Value (The "Common Stock"), of Data I/O Corporation, a Washington Corporation, and That This Agreement Be Included as an Exhibit to Such Joint Filing. This Agreement May Be Executed in Any Number of Counterparts, All of Which Taken Together Shall Constitute One and the Same Instrument. in Witness Whereof, the Undersigned Hereby Execute This Agreement as of June 23, 1999. /S/ Glen F. Ceiley Glen F. Ceiley Bisco Industries, Inc. /S/ Glen F. Ceiley Name: Glen F. Ceiley Title: President Bisco Industries, Inc. Profit Sharing and Savings Plan /S/ Glen F. Ceiley Name: Glen F. Ceiley Title: Trustee /S/ Matthew Ceiley Matthew Ceiley Page 14 of 14 Pages

from SC 13D/A 1 page <page> Exhibit 1 Joint Filing Agreement in Accordance With Rule 13d-(F) Promulgated Under the Securities Exchange Act of 1934, as Amended, the Undersigned Hereby Agree to the Joint Filing With All Other Reporting Persons (As Such Term Is Defined in the Schedule 13d Referred to Below) on Behalf of Each of Them of a Statement on Schedule 13d (Including Amendments Thereto) With Respect to the Common Stock. No Par Value (The "Common Stock"), of Data I/O Corporation, a Washington Corporation, and That This Agreement Be Included as an Exhibit to Such Joint Filing. This Agreement May Be Executed in Any Number of Counterparts, All of Which Taken Together Shall Constitute One and the Same Instrument. in Witness Whereof, the Undersigned Hereby Execute This Agreement as of March 18, 1999. /S/ Glen F. Ceiley Glen F. Ceiley Bisco Industries, Inc. /S/ Glen F. Ceiley Name: Glen F. Ceiley Title: President Bisco Industries, Inc. Profit Sharing and Savings Plan /S/ Glen F. Ceiley Name: Glen F. Ceiley Title: Trustee Page 11 of 11 Pages

from SC 13D/A 1 page <page> Exhibit 1 Joint Filing Agreement in Accordance With Rule 13d-(F) Promulgated Under the Securities Exchange Act of 1934, as Amended, the Undersigned Hereby Agree to the Joint Filing With All Other Reporting Persons (As Such Term Is Defined in the Schedule 13d Referred to Below) on Behalf of Each of Them of a Statement on Schedule 13d (Including Amendments Thereto) With Respect to the Common Stock. No Par Value (The "Common Stock"), of Data I/O Corporation, a Washington Corporation, and That This Agreement Be Included as an Exhibit to Such Joint Filing. This Agreement May Be Executed in Any Number of Counterparts, All of Which Taken Together Shall Constitute One and the Same Instrument. in Witness Whereof, the Undersigned Hereby Execute This Agreement as of February 12, 1999. /S/ Glen F. Ceiley Glen F. Ceiley Bisco Industries, Inc. /S/ Glen F. Ceiley Name: Glen F. Ceiley Title: President Bisco Industries, Inc. Profit Sharing and Savings Plan /S/ Glen F. Ceiley Name: Glen F. Ceiley Title: Trustee Page 11 of 23 Pages

from SC 13D/A 1 page <page> Exhibit 1 Joint Filing Agreement in Accordance With Rule 13d-(F) Promulgated Under the Securities Exchange Act of 1934, as Amended, the Undersigned Hereby Agree to the Joint Filing With All Other Reporting Persons (As Such Term Is Defined in the Schedule 13d Referred to Below) on Behalf of Each of Them of a Statement on Schedule 13d (Including Amendments Thereto) With Respect to the Common Stock. No Par Value (The "Common Stock"), of Data I/O Corporation, a Washington Corporation, and That This Agreement Be Included as an Exhibit to Such Joint Filing. This Agreement May Be Executed in Any Number of Counterparts, All of Which Taken Together Shall Constitute One and the Same Instrument. in Witness Whereof, the Undersigned Hereby Execute This Agreement as of January 14, 1999. /S/ Glen F. Ceiley Glen F. Ceiley Bisco Industries, Inc. /S/ Glen F. Ceiley Name: Glen F. Ceiley Title: President Bisco Industries, Inc. Profit Sharing and Savings Plan /S/ Glen F. Ceiley Name: Glen F. Ceiley Title: Trustee Page 10 of 10 Pages

from SC 13D/A 1 page <page> Exhibit 1 Joint Filing Agreement in Accordance With Rule 13d-(F) Promulgated Under the Securities Exchange Act of 1934, as Amended, the Undersigned Hereby Agree to the Joint Filing With All Other Reporting Persons (As Such Term Is Defined in the Schedule 13d Referred to Below) on Behalf of Each of Them of a Statement on Schedule 13d (Including Amendments Thereto) With Respect to the Common Stock. No Par Value (The "Common Stock"), of Data I/O Corporation, a Washington Corporation, and That This Agreement Be Included as an Exhibit to Such Joint Filing. This Agreement May Be Executed in Any Number of Counterparts, All of Which Taken Together Shall Constitute One and the Same Instrument. in Witness Whereof, the Undersigned Hereby Execute This Agreement as of January 6, 1999. /S/ Glen F. Ceiley Glen F. Ceiley Bisco Industries, Inc. /S/ Glen F. Ceiley Name: Glen F. Ceiley Title: President Bisco Industries, Inc. Profit Sharing and Savings Plan /S/ Glen F. Ceiley Name: Glen F. Ceiley Title: Trustee Page 12 of 18 Pages

from SC 13D/A 1 page <page> Exhibit 1 Joint Filing Agreement in Accordance With Rule 13d-(F) Promulgated Under the Securities Exchange Act of 1934, as Amended, the Undersigned Hereby Agree to the Joint Filing With All Other Reporting Persons (As Such Term Is Defined in the Schedule 13d Referred to Below) on Behalf of Each of Them of a Statement on Schedule 13d (Including Amendments Thereto) With Respect to the Common Stock. No Par Value (The "Common Stock"), of Data I/O Corporation, a Washington Corporation, and That This Agreement Be Included as an Exhibit to Such Joint Filing. This Agreement May Be Executed in Any Number of Counterparts, All of Which Taken Together Shall Constitute One and the Same Instrument. in Witness Whereof, the Undersigned Hereby Execute This Agreement as of December 17, 1998. /S/ Glen F. Ceiley Glen F. Ceiley Bisco Industries, Inc. /S/ Glen F. Ceiley Name: Glen F. Ceiley Title: President Bisco Industries, Inc. Profit Sharing and Savings Plan /S/ Glen F. Ceiley Name: Glen F. Ceiley Title: Trustee Page 12 of 18 Pages