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  1. GordonSmith

    Trying to identify/locate ICs

    I'm trying to cobble together various circuits into a coherent whole from what I'm finding online, and was hoping I could get some help locating or identifying alternates for the following IR3T07 (IR Preamp) MP1826 (microcontroller) UM3562 (sound generator, maybe??) Thanks! -G-
  2. GordonSmith

    increment/decrement counter

    Greetings, I'm trying to put together a project for some students, and it's a bit out of my field. The portion that's stumping me right now is to get a counter that also backslides. The output is 8 LEDs. Everytime we receive a pulse, the number of lit LEDs should increase by 1. However...
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