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???
10/18/07 18:56
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 		 #145911 - Negative number
Responding to: ???'s previous message
Erik Malund said:
an 8 bit ADC can not "give a negative number", the lowest vaue is 0 and the highest is PLUS 255

No - that's not necessarily true:

An 8-bit ADC could use its 8 bits in any way it chooses, and it might choose some way to represent negative numbers; eg:
  • Sign+Magnitude;
  • An implied offset - so that, eg, 0x7F represents zero;
  • Two's complement.


    • List of 7 messages in thread
    TopicAuthorDate
    LPC935/6 ADC            01/01/70 00:00      
       I do not know about you ....            01/01/70 00:00      
          Negative number            01/01/70 00:00      
             right and wrong            01/01/70 00:00      
       What about!            01/01/70 00:00      
          AD13 pin is a DAC pin as well, are you sure there            01/01/70 00:00      
             Code Architect            01/01/70 00:00      

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