This is a musical instrument based on NE555. The main components are NE555 chip, buzzer, tact switch, peripheral resistors and capacitors, etc. The production is relatively simple and suitable for novices to practice using EDA software and welding exercises. It is the content of the second EDA training in 2021 by the Nanyou University Science and Technology Association. The finished product requires about 5V power supply. Pressing different buttons can produce different tones and realize the basic functions of the music instrument.
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