National Technical Systems (NTS) is a nationally recognized testing laboratory with facilities around the United States. The Computer Testing Division (formerly, XXCAL Testing Laboratories) was formed in 1982 to serve the testing needs of the microcomputer manufacturers and software developers in the areas of quality assurance, programming, compatibility testing and certification, functionality testing, usability testing, test plan development, and documentation. We are one of the oldest and largest independent microcomputer testing company in the industry, and currently provide services to hardware, software and networking companies worldwide.

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