17-04-2002 дата публикации
Номер: CN0001345016A
Принадлежит:
The invention related to a kind of toys and teaching aids discloses a device used for recognizing and reading characters in large capacity. It is composed of recognizer-reader, a read set, shell and recognizing and reading trigger. The read set consists of intelligent keyboard, voice module, sender, electrical source, etc. The recognizer-reader is composed of receiver, processor, demodulator, audio power amplifier, loud speaker, control circuit and electrical source. After being connected with receiver, processor and demodulator in parallel, the control switch is connected to the electrical source in serial. The recognizer-reader and the read set are split. There are several kinds of interchangeable read sets, of different characters and voice modules. The recognizing and reading trigger is composed of magnetic pointer and magnetic sensor. The type of modem can be one among frequency modulation, amplitude modulation, pulse width modulation, and digital frquency modulation. The carrying ...
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