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Programmable logic devices on base of asynchronous combinational circuits with feedback are considered. The main aim of the research is to obtain a method for designing a circuit with a set of prescribed stable states or a circuit without stable states — a generator of true random numbers. Both the cases of binary and ternary logics are studied.

Nowadays the progress in information technologies filed is opening great new possibilities for people in all areas of living. As education is fundamental step in every person's life we have to increase its’ popularity, availability and convenience for everybody. Information technologies present a lot of new tools and approaches which expand the infrastructure of the educational process. Our idea integrates the simplicity and reliability of client-server architecture and usability of various forms of user interfaces. The design describes an e-learning system, which has an m-learning interface, and several new modules which increase the efficiency of the studies. For these purposes we propose module for preliminary homework checking, statistical module and feedback module that can be extended to the separate rating system. The variety of interfaces is supported by three components: desktop application, mobile application and web-based application. Although we concentrate on desktop and mobile forms as according to the statistical data they are more usable. The difference of European, American and Russian systems of education predetermine some aspects in the design approach. It allows to use the strongest advantages of every model in the solution and to share the multinational experience. The paper describes in details the highlighted moments.