Summary: Failure models and multichannel signature analysis use approaches for multi output digital devices diagnostics are considered in this article. Principles of digital devices, technical data analyses and diagnostics methodology necessary for search failure localization are given. It has been shown that the authenticity of digital devices operation is defined by the diagnostics methods which are used for equipment availability and failure identification.

Key words: microprocessor, diagnostics, analyzer.

Summary: The article describes the types, functions and means of implementing cloud computing in the learning process. The comparison of the most common characteristics of virtual learning environments and related cloud services.

Key words:  cloud computing, interface, internet, cloud educational technology, the quality of education.