2.4 computational thinking

2.4 computational thinking

1. Binary-Presence of electricity

   • Binary-0=OFF, 1=ON

2. Logic gates take inputs and convert them to an output

3. keywords:

   • Logic gate
     • Transistor
       • Bit (Binary Digit)
         • Logic circuit
   • AND
     • OR
       • NOT
         • A^B (AND)
           • AVB (OR)
             • ¬A (NOT)

4. Binary - used to change bits and perform calculations within a computer created by using transistors

5. Truth table- output of logic gates can be shown through a truth table

   • Truth Table shows what an output will be, based on the inputs

6. Byte-made up of a bits

   • 4 bytes (1/2 of byte) = nibble

7. 11111111 = 2 to the power of 8/ = 255 rows because row number has to be odd (so -1)