Computing

Computing

1. Logic Gates

   • or,and,not, nand, nor, xor
     • An And gate will be active if all of the inputs = 1
     • A not gate will be active if all the inputs = 0
     • An Or gate will be active if any one of the inputs = 1.
     • A Nor gate will be active if all of the inputs = 0
     • A NAND gate will be active if any input = 0
     • An XOR gate will be active if only one of the inputs = 1

2. DeMorgan's Law

   • Made of A's and B's
   • + means or, . means and

3. A or B = Not not A or B

4. Binary

   • Computing with only 1 and 0's
   • Computer code. 1= on, 0= off