A distinctive feature of the present stage in computer equipment development is the continuous increase in functionality and complexity of computer components. Production procedures and techniques for electronic equipment are constantly improved and its capabilities expand. The use of advanced technologies increases the integration of digital components in computers, and extends their range. The ever-growing complexity of digital components used in computers places more stringent requirements upon their reliability. Reliability may be improved by a complex of technological, maintenance and organizational measures. The technical diagnostic techniques for digital computer component are exceptional. One of the types of diagnosing computer parts and components is on-line testing. Its application at the stage of components manufacturing allows users to determine whether their behaviour is correct and to perform the fault location procedure which eventually improves the basic reliability parameters.
The principal emphasis of the present study is on the use of up-to-date on-line testing techniques for digital devices employed in computers which are popular but have not been adequately covered in literature.