Virtual walk through my 8051 development suite, step 3

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But what should a MCU do without any input?

• Most designs need a keyboard:
  
  
  
  Eight keys will be sufficient or redo your user interface. Who wants do drill so many holes?
  
  
• Or some analogue signals need to be considered:
  
  
  
  This dual slope converter provide a high resolution at low cost.

Disclaimer: No warranty at all!
Copyright by Martin Clausen, Germany.
Contact the author: mc AT rotgradpsi DOT de
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