Logic Gates
Last updated
Last updated
Controlling electricity gives us the ability to make yes and no decisions or true
and false
. By combining two signals, we can give a single true
or false
answer, depending on the logic
. The flow of electricity is controlled using gates
(no, not named after Bill Gates - like a gate).
The simplest gate, this item inverts
or reverses the signal.
Input (A)
Output (Q)
0
1
1
0
The two "universal" gates are NOR
and NAND
- it is said that you can create all the other logic gates with a combination of just these two.
There are tons of videos available about logic gates. If I had to pick a favourite, my current is this one, although she talks incredibly fast and you might need to slow it down or rewind.
Only outputs true if both inputs are true.
Any gate with a dot is an inverted
gate.
This is the NOT AND gate:
One or the other or both!
Very simply NOT OR.
Exclusive OR meaning only one is true, not both.
Exclusively NOT OR. If both inputs are the same, output true.