1. JC Technology
Logic Gates

2. Logic Gates Digital Electronics Two states: ON or OFF
ON = high voltage level = 1
OFF = low voltage level = 0
Digital circuit has three parts:
Input
Process
Output
Logic Gates process the inputs and send signal to the output

3. Logic Gates AND Gate Acts like two switches in series SW1 SW2 Bulb
Open
Off
Closed On
Symbol

4. Logic Gates
AND Gate
Truth Table

5. Logic Gates OR Gate Acts like two switches in parallel SW1 SW2 Bulb
Open
Off
Closed On
Symbol

6. Logic Gates
OR Gate
Truth Table

7. Logic Gates NOT Gate Acts like a PTB switch PTB Bulb
Normal position (no input) On
Activated position
(input = press of PTB)
Off
Symbol

8. Logic Gates
NOT Gate
Truth Table

9. Logic Gates NAND Gate Combination of an AND and NOT gate A B Q 1 A Q 11 A Q 1
NOT
AND

10. Logic Gates
NAND Gate