DATA I/O CORP — Director's Dealing 2004

Sep 17, 2004

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: DATA I/O CORP (DAIO)
CIK: 0000351998
Period of Report: 2004-09-14

Reporting Person: BISCO INDUSTRIES INC (Director, 10% Owner)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2004-09-14	Data I/O	S	5240	$2.45	Disposed	780613	Indirect
2004-09-16	Data I/O	S	3650	$2.53	Disposed	776963	Indirect
2004-09-15	Data I/O	S	60	$2.29	Disposed	369463	Indirect
2004-09-16	Data I/O	S	5000	$2.41	Disposed	364463	Indirect