E.V. Naidyonov - Post-graduate Student, Department of Electronics and Microprocessor Technology, Smolensk branch of «NRU «MPEI». E-mail: nzettez@gmail.com I.V. Jakimenko - Dr. Sc. (Eng.), Associate Professor, Department of Electronics and Microprocessor Technology, Smolensk branch of «NRU «MPEI». E-mail: jakigor@rambler.ru