LM358 100 Times Gain Signal Amplifier Op-amp

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onboard LM358 chip       2,100 gain of circuit design       3, onboard 10K adjustable resistance, you can adjust the magnification       4, on-board power indicator       5, the chip has been drawn primarily pin can be directly input and output signals       6, Operating Voltage: …
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MAX7219 4 in 1 Dot Matrix Module with 5P Line

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MAX7219 is an integrated serial input / output common-cathode display driver, it connects the microprocessor 7-segment digital LED display with 8 digits, you can also connect a bar graph display or 64 independent LED. Thereon including a B-type BCD encoder chip, multi-channel scanning loop segment word driver, but also a static RAM 8 * 8 …
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