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2018-01-25 02:28  
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In the circuit basically usability base ICUM66Tuse sound of music sweet-sounding origin and be usable easily. It use just integrated one circuit and a loudspeaker ,piezo buzzer, the small-sized , and have power supply 3V only. The detail is other of integrated number this circuit.
The UM66T series are CMOS LSI designed for using in door bell, telephone and toy
application. It is an on-chip ROM programmed for musical performance. Produced by CMOS
technology, the device results in very low power consumption. Since the UTC UM66TXXLMelody generator ICseries include oscillation circuits a compact melody module can be constructed with only a few additional components.

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