E.V. Naidenov - Post-graduate, Assistant, Department of Electronics and Microprocessor Technology, Branch «NIU» MEI» (Smolensk). E-mail: nzettez@gmail.com I.V. Yakimenko - Associate Professor, Department of Electronics and Microprocessor Technology, Branch «NIU» MEI» (Smolensk). E-mail: jakigor@rambler.ru