unit 3: logical operations 22

unit 3: logical operations 22

1. logical operators

   • operators
     • AND
       • the output is 1 only if both inputs are 1
     • OR
       • the output is 1 if either input is 1
     • NOT
       • the output is the opposite of the input
     • XOR
       • the output is 1 if exactly one of the inputs is 1
   • truth tables

2. boolean logic

   • boolean expressions
     • AND is represented by a dot .
     • OR is represented by a plus +
     • NOT is represented by a bar -
     • XOR is represented by a circled plus (icantdothat) (+)
   • laws

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