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74HC595 chip is a serial output and parallel output device. To put it simply, 74HC595 chip is a combination of 8-digit shifting register, memorizer and equipped with tri-state output.
Here, we use it to control 8 LEDs. You may wonder why use a 74HC595 to control LED? Well, think about how many I/O it takes for an Arduino to control 8 LEDs? Yes, 8.
🚥For an Arduino 328, it has only 20 I/O including analog ports. To save port resources, using 74HC595 enables us to use 3 digital I/O ports to control 8 LEDs!After downloading the program, you can see 8 LEDs display 8-bit binary number.
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11 июн 2024
