Blink LED with Arduino – say Hello World

When we learn a new programming language in computer science (say C, PHP or Java), we begin the learning curve with the classic “Hello World” program.  We learn some essential keywords used in the programming language, then we learn the structure of the language and finally we begin to play with the language by making it display the two words “hello world” in our computer screen. So that’s how we begin to l ...

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