Today's Study(Flip-Flop Circuit)

Hi, Everyone! This is @neko9!!
Today I would like to study flip-flop circuits.

First, let's look at the difference between "combinational logic circuits" and "sequential logic circuits".

・Combinational Logic Circuits
The output is uniquely determined for the input.

・Sequential Logic Circuits
The output is determined by the state due to past input and the current input.

So? I guess.
The basic performance of a CPU is arithmetic and memory, but "combinational logic circuits" alone can't do memory!

And the sequential logic circuit is called a "flip-flop circuits".
Now that we know why we need flip-flop circuits, let's look at the most basic RS flip-flop circuit.

S : Set
R : Reset
Q : Output

①NOR type

②NAND type

↓A simple truth table looks like this

What both ① and ② are doing is the same.
In essence, what they are doing is to maintain the current state.
※Operationally, it is a circuit that repeats set and reset, like a switch that turns on and off.

How was it?
See you in the next Today's Study!