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mean that the processor of mcu will check spesfic registers in loop way

while (1)

{

if (PINA = ... ) then >>>>>

if(PINB = ... ) then >>>>>>>>

if(PINC = .....) then >>>>>>>.

}

here the processor polling polling for this register

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Q: What is polling in microcontrollers?
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8051 Microcontrollers were popular computer chips used in Intel computers throughout the eighties and nineties. Though technology has advanced beyond their common use, they can still often be found in engineering schools as tools used in introductory microcontroller classes.


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