[Editor's note: A reader has brought to our attention that this article has missing figures. Both the ZL30406 and ZL30407 are obsolete (no longer made or stocked as of checking on 12/14/2024) ...
Here is the simplest 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. It has a built in ROM programmed for playing ...
Nicholas Murray]’s Composite Test Pattern Generator is a beautifully-made, palm-sized tool that uses an ESP32-based ...
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