Complex Logic Circuits
Overview
By combining logic gates it is possible to be create increasingly sophisticated circuits than can perform task from adding two numbers together to processing a video image. It is exactly these sorts of complex sets of logic gates make up every modern computer based device.
Exercise:
For each gate, there is a specific shape used to represent that gate. Complete the following table, filling in the shape for each gate listed.
Gate Name |
Gate Shape |
AND |
|
OR |
|
NOT |
Complete the following logic tables for each of the circuits given. Start with each pair of given inputs on the left and follow them through the circuit to determine the resulting output.
Input A
Input B
Output
(HIGH or LOW)
HIGH
HIGH
HIGH
LOW
LOW
HIGH
LOW
LOW
Input A
Input B
Output
(HIGH or LOW)
HIGH
HIGH
HIGH
LOW
LOW
HIGH
LOW
LOW
Input A
Input B
Output
(HIGH or LOW)
HIGH
HIGH
HIGH
LOW
LOW
HIGH
LOW
LOW
Input A
Input B
Output
(HIGH or LOW)
HIGH
HIGH
HIGH
LOW
LOW
HIGH
LOW
LOW
Input A
Input B
Output
(HIGH or LOW)
HIGH
HIGH
HIGH
LOW
LOW
HIGH
LOW
LOW
TEACHER CHECK _____