Input/output Ports
Analog to digitalConversionADC ROBO INDIAhttp://roboindia.comWHY
SIGNALS ???Signal carry informationType of signals???Type of
SIGNALSANALOG SIGNALAre all CONTINUOUS time signals ANALOG ?All
continuous time signals are analog but all analog signals are not
continuous time
ANALOG SIGNALThe ADC converts an analog input voltage to a
10-bit digital value through successive approximation. The minimum
value represents GND and the maximum value represents the voltage
on the AREF pin minus 1 LSBA/D WorkingA/D conversionSignal
processingWhat's wrong with totally analog ?Ans Two arrows in a
Quiver is always better than oneSignal processingA digital signal
is superior to an analog signal because it is more robust to noise
and can easily be recovered, corrected and amplified. For this
reason, the tendency today is to change an analog signal to digital
dataSignal processingNeed of a/d or d/a ?PROGRAMMING OF
ADCReadADCX() {ADMUX=0x4X;ADCSRA=0x86;SETBIT(ADCSRA,BIT(6));
while(!(ADCSRA & (1
