2.4 REVISION

2.4 REVISION

1. NOT Gate

   • inverts the input (turns 0 into 1)

2. OR gate

   • either input has to be 1 for the output to be 1

3. AND gate

   • both inputs need to be 1 for output to be 1

4. Logic circuit - a combination of different logic gates to perform more complex tasks

5. Transistor - a tiny switch that is activated by the electronic signals it receives. the number '1' means the switch is turned on and the number '0' means the switch is turned off

6. half adder - a circuit to add 2 binary bits together.

   • full adder circuit - 2 half adders together. This can do add more than 2 bits together and deal with carrying bits over

7. The symbols used to describe logic gates.

   • in terms of boolean equations

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