The recorder to microcomputer viewing shift circuit diagram

Published:2011/3/24 2:10:00 Author:Ecco | Keyword: recorder, microcomputer viewing | From:SeekIC

In the circuitry, the input signal from the speaker or earphone jack of recorder, and get to microcomputer. The green light-emitted diode indicates semaphore of electrical level, red light-emitted diode indicate working state. To regulate the volume knob, click a bright light-emitted diode, then mean to input amplitude alreadyreaches 2.5 V, simultaneously, the antijamming capability is stronger. Input signal throughs two stage inverter TTL and emitter, and follows machine transfer into micro machine at the same time.



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