#MelodyGenerator circuit is a simple melody generator circuit you can make using an IC.The UM66 series are CMOS IC’s designed for using in calling bell, phone and toys. Contact us : goo.gl/rMvUZV#MelodyGenerator circuit is a simple melody generator circuit you can make using an IC.The UM66 series are CMOS IC’s designed for using in calling bell, phone and toys. Contact us : goo.gl/rMvUZV
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