青云翻译

Using a dual-tone multi-frequency transceiver chip mt8880 to be encoded to produce pairs of audio signals, then through the audio amplifier lm386 power and amplitude of the audio signal amplification.

DTMF transceiver chip encoding MT8880 to produce dual-audio signal, then through an LM386 audio amplifier dual audio amplifier of signal power and range.

Used double sound multi-frequency receiving and dispatching chip MT8880 to carry on the code to produce the double tonic train signaling, again came the doubling tonic train signaling through audioamplifier LM386 the power and the scope enlargement.

With dual-tone multi-frequency (RF) transceiver chip MT 8880 encoded to have a dual-audio signal, the audio amplifier LM 386 to complete dual-audio signal power and range of magnification.

DTMF transceiver chip encoding MT8880 to produce dual-audio signal, then through an LM386 audio amplifier dual audio amplifier of signal power and range.