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Need of negative logic

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Anonymous

11y ago
Updated: 8/21/2019

There are many reasons that one might prefer to use negative logic in some or all of a design, a few of these are:

  • discrete switch closure inputs - closing the switch grounds the line (true), opening a pullup resistor pulls the line high (false)
  • multisource signals can be "wire ored" using open collector/drain outputs and a single pullup resistor, instead of needing many actual or gate devices
  • etc.
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Wiki User

11y ago

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