Non-classical approach to logical synthesis of multi-valued elements (ME) of computer equipment, based on principles of linear algebra, is considered. Ideology and basic principles of ME building, which are non-similar to traditional one are described.

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The architecture and circuitry of the differential difference amplifier (DDA) with higher radiation hardness (the total dose of radiation is up to 1 millirad, the neutron flux is up to 10 13 n/сm 2 ) are reviewed. The fundamental equations are obtained which simplify the parameter determination of the analog and digital interfaces on its basis. The characteristics of the main connection circuits of DDA are examined taking into consideration the effect of the loop gain, transadmittance of the input stages and feedback resistors. It is shown that one circuit of DDA renders possible to provide rather wide set of the identical characteristics without feedback resistors at the inverting and noninverting connections.

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