Function 

Description 

delay 

Pauses the program by setting up parameter to designate time to pause(unit:ms) 

delayMicroseconds 

Pauses the program by setting up parameter to designate time to pause(unit:us) 

micros 

Time from returning to LinkIt to enable the current program to the present(unit:us) 

millis 

Time from returning to LinkIt to enable the current program to the present(unit:ms).