Code360 powered by Coding Ninjas X Naukri.com. Code360 powered by Coding Ninjas X Naukri.com
Table of contents
1.
Introduction
2.
What is Flip Flop?
3.
Types of Flip-Flops
3.1.
SR Flip Flop
3.1.1.
Example:
3.2.
JK Flip Flop
3.2.1.
Example:
3.3.
D Flip Flop
3.3.1.
Example:
3.4.
T Flip Flop
3.4.1.
Example:
4.
Frequently Asked Questions
4.1.
What makes a flip flop different from a latch?
4.2.
Can flip flops be used for data storage?
4.3.
How do flip flops contribute to digital clocks?
5.
Conclusion
Last Updated: Mar 27, 2024
Medium

What is Flip Flop?

Author Sinki Kumari
0 upvote
Leveraging ChatGPT - GenAI as a Microsoft Data Expert
Speaker
Prerita Agarwal
Data Specialist @
23 Jul, 2024 @ 01:30 PM

Introduction

Flip flops are the building blocks at the heart of digital electronics. They're like tiny memory cells that store a single bit of data: either a 0 or a 1. What makes them special is their ability to hold onto this bit until they're told to change it, making them perfect for tasks where you need to remember something important in a circuit, like whether a light should be on or off.In this article, we will look into the flip flops in detail.

What is Flip Flop

 We'll explore different types, from the simple SR (Set-Reset) to the more complex T (Toggle) Flip Flop, each with its unique features and uses.

What is Flip Flop?

At its core, a flip flop is a circuit that has two stable states and can be used to store state information. A flip flop circuit can be in one of two states: it can either hold a 0 or a 1. This ability makes it an essential part of digital circuits, especially for storing binary information. Think of it as a basic unit of memory that can remember if something is on or off, yes or no, true or false.

Flip flops are used everywhere in digital electronics. They help in tasks like counting, storing data, and even in the operation of digital watches and computers. The magic of flip flops lies in their simplicity and their ability to maintain their state until they receive a signal to change. This makes them incredibly useful for creating reliable and stable digital systems.

The simplest way to understand a flip flop is to imagine a light switch. This switch can either be in an 'on' position or an 'off' position, and it stays in its current state until you decide to flip it. A flip flop works in a similar way but on a much smaller, electronic scale. It 'remembers' if it's supposed to be on or off until a new signal tells it to switch.

Get the tech career you deserve, faster!
Connect with our expert counsellors to understand how to hack your way to success
User rating 4.7/5
1:1 doubt support
95% placement record
Akash Pal
Senior Software Engineer
326% Hike After Job Bootcamp
Himanshu Gusain
Programmer Analyst
32 LPA After Job Bootcamp
After Job
Bootcamp

Types of Flip-Flops

SR Flip Flop

The SR (Set-Reset) flip flop is the simplest type. It has two inputs: Set (S) and Reset (R). When the Set input is activated (or set to 1), the flip flop stores a 1. When the Reset input is activated, it stores a 0. It's crucial that both inputs are never activated at the same time, as this can lead to unpredictable behavior.

Example:

class SRFlipFlop:
    def __init__(self):
        self.state = 0  # Initial state

    def set(self):
        self.state = 1

    def reset(self):
        self.state = 0

    def get_state(self):
        return self.state

# Example usage
flip_flop = SRFlipFlop()
flip_flop.set()  # Sets the state to 1
print(flip_flop.get_state())  
flip_flop.reset()  # Resets the state to 0
print(flip_flop.get_state())  


Output

1
0

JK Flip Flop

The JK flip flop improves on the SR flip flop by handling the case where both inputs are 1. Instead of an undefined state, in a JK flip flop, when both J (Set) and K (Reset) inputs are 1, the output toggles. This means if it was storing a 1, it changes to 0, and vice versa.

Example:

class JKFlipFlop:
    def __init__(self):
        self.state = 0

    def operate(self, j, k):
        if j and not k:
            self.state = 1
        elif k and not j:
            self.state = 0
        elif j and k:
            self.state = not self.state  # Toggles the state
# Example usage
jk_flip_flop = JKFlipFlop()
jk_flip_flop.operate(1, 0)  # Set
print(jk_flip_flop.state)  
jk_flip_flop.operate(0, 1)  # Reset
print(jk_flip_flop.state)  
jk_flip_flop.operate(1, 1)  # Toggle
print(jk_flip_flop.state)  


Output

1
0
1

D Flip Flop

The D (Data) flip flop has a single input. It takes the value on the input and stores it during the next clock cycle. The D flip flop essentially 'copies' the input to the output.

Example:

class DFlipFlop:
    def __init__(self):
        self.state = 0
  def set_data(self, data):
        self.state = data  # Takes the input data and stores it as state
# Example usage
d_flip_flop = DFlipFlop()
d_flip_flop.set_data(1)  # Set data to 1
print(d_flip_flop.state) 


 Output

1

T Flip Flop

Lastly, the T (Toggle) flip flop toggles its state whenever the input is 1. If the flip flop was storing a 0 and it receives a 1, it changes to 1, and if it was storing a 1, it changes to 0.

Example:

class TFlipFlop:
    def __init__(self):
        self.state = 0
  def toggle(self, t):
        if t:
            self.state = not self.state  # Toggles the state based on input
# Example usage
t_flip_flop = TFlipFlop()
t_flip_flop.toggle(1)  # Toggle from 0 to 1
print(t_flip_flop.state)  
t_flip_flop.toggle(1)  # Toggle from 1 to 0
print(t_flip_flop.state)  


Output

1
0


Each type of flip flop serves a different purpose in digital circuits, from simple state storage in SR flip flops to controlled data copying in D flip flops and state toggling in T flip flops.

Frequently Asked Questions

What makes a flip flop different from a latch?

A flip flop is a type of latch that is edge-triggered, meaning it changes state only at the edge of a control signal, not while the signal is sustained. This makes flip flops more predictable for timing operations in digital circuits.

Can flip flops be used for data storage?

Yes, flip flops can store a single bit of data, making them the smallest unit of memory. They are used in various storage devices and memory arrays to store large amounts of data, bit by bit.

How do flip flops contribute to digital clocks?

Flip flops are fundamental in digital clocks for their counting circuits. They help in dividing the clock signal to display seconds, minutes, and hours accurately.

Conclusion

In this article, we talked about the basics of flip flops, a crucial component in digital electronics. We started by understanding what flip flops are and their ability to store binary information. We then explored the different types of flip flops, including SR, JK, D, and T flip flops, each serving unique purposes in digital circuits.

You can refer to our guided paths on the Coding Ninjas. You can check our course to learn more about DSADBMSCompetitive ProgrammingPythonJavaJavaScript, etc. Also, check out some of the Guided Paths on topics such as Data Structure and AlgorithmsCompetitive ProgrammingOperating SystemsComputer Networks, DBMSSystem Design, etc., as well as some Contests, Test Series, and Interview Experiences curated by top Industry Experts.

Live masterclass