EX-21 5 a2073908zex-21.htm EX 21
QuickLinks -- Click here to rapidly navigate through this document

EXHIBIT 21


DATA I/O CORPORATION
SUBSIDIARIES OF THE REGISTRANT

The following table indicates the name, jurisdiction of incorporation and basis of ownership of each of the Company's subsidiaries:

Name of Subsidiary
  State or
Jurisdiction of
Organization

  Percentage
of Voting
Securities
Owned

Data I/O International, Inc.   Washington   100%
Data I/O FSC International, Inc.   Territory of Guam   100%
Data I/O Canada Corporation   Canada   100%
Data I/O China, Ltd   China   100%
Data I/O GmbH   Germany   100%
RTD, Inc. (formerly Reel-Tech, Inc.)   Washington   100%



QuickLinks

DATA I/O CORPORATION SUBSIDIARIES OF THE REGISTRANT