TDA Inc. has been in the business of developing testing and certification software since 1989.
 TDA Inc. has been working with educational organizations ranging from school boards to colleges, universities and professional certification boards world wide. Certification Enterprise also serves as a tool for professional organizations that offer their psychometric and testing services to professional certification boards. Product Launch Timeline
1989 Exam Manager
1996 Performance Evaluation Technology (PET)
1998 PET Web Server
2007 Marking Center
2008 InvigExam
2008 USB FAD
2009 Certification Enterprise
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