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<p class='vspace'></p><h2>micros()</h2>
<h4>Description</h4>
<p>Returns the number of microseconds since the Arduino board began running the current program. This number will overflow (go back to zero), after approximately 70 minutes. On 16 <span class='wikiword'>MHz</span> Arduino boards (e.g. Duemilanove and Nano), this function has a resolution of four microseconds (i.e. the value returned is always a multiple of four). On 8 <span class='wikiword'>MHz</span> Arduino boards (e.g. the <span class='wikiword'>LilyPad</span>), this function has a resolution of eight microseconds.
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<p class='vspace'></p><p><em>Note</em>: there are 1,000 microseconds in a millisecond and 1,000,000 microseconds in a second.
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<p class='vspace'></p><h4>Parameters</h4>
<p>None
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<p class='vspace'></p><h4>Returns</h4>
<p>Number of microseconds since the program started (<em>unsigned long</em>)
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<p class='vspace'></p><h4>Example</h4>
<pre>
unsigned long time;
void setup(){
Serial.begin(9600);
}
void loop(){
Serial.print("Time: ");
time = micros();
//prints time since program started
Serial.println(time);
// wait a second so as not to send massive amounts of data
delay(1000);
}
</pre>
<p class='vspace'></p><h4>See also</h4>
<ul><li><a class='wikilink' href='Millis.html'>millis</a>()
</li><li><a class='wikilink' href='Delay.html'>delay</a>()
</li><li><a class='wikilink' href='DelayMicroseconds.html'>delayMicroseconds</a>()
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