@@ -64,7 +64,26 @@ void loop()
6464### Code Explanation
6565There are just 3 commands here:
6666
67- ` pinMode ` is where you tell the Arduino
67+ ` pinMode ` is the command you tell the Arduino
6868board what is the mode of a particular pin.
6969If ever you did not mention that, then the
70- default is `iput.
70+ default is ` input ` .
71+ 72+ ` digitalWrite ` is the command whether
73+ there will be supply of voltage ` HIGH `
74+ or there is none ` LOW ` for a particular
75+ pin, like in our example,
76+ Arduino Digital Pin 13. For a basic LED,
77+ we all know that when there is sufficient
78+ voltage, it will light up and if there
79+ is none, there will be none.
80+ 81+ ` delay ` is the command for temporarily delay
82+ a program, just like a pause. If prior to
83+ this, an LED is light up, it will pause for
84+ a certain amount of time with the initial
85+ status of the LED. It's in terms of milliseconds,
86+ because for computers, they work in terms of
87+ milli or nanoseconds. For example, they can
88+ accomplish 1000 digital task in just 1 second.
89+ For high-powered servers, it's more than that.
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