Flip-flop|Electronics|Types of Flip Flops|sequential logic circuit|types of triggering

Flip Flop

It is used to store state information.

Simply put, a flip flop is a type of circuit that has two states (0 or 1).  

The flip-flop is a sequential logic circuit.Which is capable of 

storing a bit. The output of the flip flop is stable. And it carries only two values like high voltage or low voltage: - an output will be either 0 or 1.

Flip Flop is a binary storage device. This binary bit can store 0 or 1. It is the smallest storage unit of a computer such as: - It stores a single bit (0 or 1). The number of external inputs depends on the type of flip flop. Flip flop is also called stable multi-vibrator.

Generally two output lines are available in flip flops which are opposite of each other. Most people confuse flip flops and latch, flip flop and latch are both circuits and both work to store information. One difference between the flip flop and the latch is that whenever the input of the latch changes, the output also changes.

While the Flip Flop is a combination of latch and clock, it is made up of latch and clock. This puts the control operation at the clock output so the output does not change and it depends on the clock. Use the clock in a flip flop so that when the input changes, then the functionality or internal logic of the flip flop will not be affected. Operation is called triggering. triggering is required to initiate the operation. 

There are two types of triggering –

1.Edge

2.Level

Types of Flip Flops

1.   R S Flip Flop

2.   J K Flip Flop

3.   D Flip Flop

4.   T Flip Flop

1. R S Flip Flop

R-S Flip Flops are basic or fundamental Flip Flops because

all Flip Flops are generated from the R S Flip Flop itself. Where R S Flip Flop has two external inputs R (reset) and S (set). When R is active (R = 1) the output reset is Q = 0 and when S is active (S = 1) the output set is Q = 1. R-S Flip Flops are also called Bistable multivibrator. To make an R S Flip Flop, use two NAND or NOR gate.

SR Flip Flop 

SR flip flop Truth Table

2. JK Flip Flop

JK Flip Flops meets a shortcoming of RS Flip Flop. The main disadvantage of RS Flip Flop is that when the clock is triggered, both inputs should not be high. That is, we cannot use a set (1,1) of input in RS Flip Flop. But in JK Flip Flop we can use this set of input (1,1).

JK Flip Flop

JK Flip Flop using Nanad Gate

JK Flip Flop using Nor gate

JK Flip Flop Truth Table

3. D Flip Flop

D Flip Flop is used to create a delay if a delay is required inside a circuit. The same output is given as input is given in D Flip Flop such as: - If given 1 input then output will also be 1. Or if 0 input is given, the output will also be 0. D Flip Flop is also called delayed Flip Flop. This is a single input flip flip. There is also no race condition. 

D Flip Flop

D Flip Flop Truth Table

4. T Flip Flop

T Flip-Flop is a single input flip flop.This is a simpler version of JK Flip Flop. T Flip Flop is known as toggle Flip-Flop. T Flip Flop is widely used in counters, it is a sequential circuit that changes state after each clock pulse.

T Flip Flop

T Flop Flop Truth Table

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