K karenpinto_2004 New Member Dec 21, 2004 #1 i made a bell with an audio chip-820,um66 can some one please help me with the project report. i need some theory on the working of the AUDIO-820 & um 66 ckt diagrams
i made a bell with an audio chip-820,um66 can some one please help me with the project report. i need some theory on the working of the AUDIO-820 & um 66 ckt diagrams