What is flip-flop????

What is a digital flip-flop and how work it? Give me anyone some conceptual information.

A flip flop changes it's output state from 0 to 1 or vice versa when a pulse is fed to it's input.

It will respond to either rising or falling edge of the pulse depending it is positive or negative edge triggered.

It can store one bit of information and are the basic building blocks of digital electronics.

There are different kind of flip flops like T flip-flop,D flip-flop,SR flip-flop ,JK flip-flop etc. Also we can classify them as synchronous and asynchronous.

How to make it and how it retain one bit data?

This is a video to build a simple flip-flop
https://www.youtube.com/watch?v=IykOrxVcdyg

It retains the one bit data in the sense that the output state will be 0 or 1 until the next pulse is fed.

Hello avidestroyer,

How to make it

Click to expand...

Look for my answer to your question before.

how it retain one bit data?

Click to expand...

Look for the circuit.

If the left transistor (T₁) is close the output A₁ has high level "1".

Through the base resistor (18kΩ) the left transistor (T₂) is hold open, because A₁ is "1" and T₂ gets positive base voltage. So the output A₂ has low level "0". Through the base resistor of T₁ the base is hold on low level and hold the transistor close.

If you put the input E₂₀ to ground or give a negative pulse, T₂ close and A₂ changes to "1". At the same time the base of T₁ gets also high level from the base resistor. A₁ changes to "0". Now the base of T₂ is hold on low level by A₁. After the input E₂₀ is not more grounded or the negative pulse is gone, this condition is hold until E₁₀ is grounded or gets a negative pulse.

The conditions at the outputs changes, when a negative pulse arrive at the opposite input.

Regards

Rainer