FIELD: automatics; computer technology. SUBSTANCE: device has Morse code former, electro-acoustic converter, code random selection unit, control unit, unit for setting number of symbols, reply analyzing unit, registration unit and unit for inputting replies and circuit couplings described in the invention. Invention provides forming and sonic showing of group of symbols (digits ) with subsequent reproduction of signal indicated randomly. True replies result to increase is number of symbols in group, that permits to define the level of skills of involuntary memorizing of sonic specimens. EFFECT: improved speed of operation; improved truth of information. 3 cl, 5 dwg
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Authors
Dates
1994-08-30—Published
1991-04-29—Filed