2 states 2 flip-flops => 4 states 3 flip3 flip-flops => 8 statesflops => 8 states 4 flip-flops => 16 states The operation of T flip-flop is same as that of JK flip-flop. Analysing the above assembly as a three stage structure considering previous state(Q’) to be 0. Q t is denotes the output of the present state and Q t+1 denotes the output of next state. Toggle t flip flop. Similarly when Q=0 and Q’=1,the flip flop is said to be in CLEAR state. So … Each flip-flop is in the set state when Q=1 and in the reset state when Q=0. 9.7. and 9.8 respectively. Glad that this project helped you. Table 3 shows the state diagrams of the four types of flip-flops. Again, this gets divided into positive edge triggered D flip flop and negative edge triggered D flip-flop. In SR NAND Gate Bistable circuit, the undefined input condition of SET = "0" and RESET = "0" is forbidden. a) Use D flip-flops in the design b) Use J-K flip-flops in the design Fig.P5-19 Instead, ... D flip-flops are the ones found in almost all PLDs. From the above state table, we can directly write the next state equation as. SR Flip Flop- SR flip flop is the simplest type of flip flops. T Flip-flop: The name T flip-flop is termed from the nature of toggling operation. Hence, the regulated 5V output is used as the Vcc and pin supply to the IC. So these flip – flops are also called Toggle flip – flops. The latches can also be understood as Bistable Multivibrator as two stable states. The circuit diagram of T flip-flop is shown in the following figure. They are used to store 1 – bit binary data. State diagrams of the four types of flip-flops. Easiest way to go from the state diagram to a circuit is to assign a flip-flop to each state. State Diagrams and State Table Examples . Draw state table • 5. The and gate therefore produces logic 1 at its output only for the 45ns when both a and b are at logic 1 after the rising edge of the clock pulse. There is no indeterminate condition, in the operation of JK flip flop i.e. Gated D flip flop or also known as level triggered D flip flop has an extra control input known as “Enable” or “clock” input. The block diagram of 3-bit SISO shift register is shown in the following figure. The state diagram is.Q Q(next) S R0 0 0 X0 1 1 01 0 0 11 1 X 0 6. The circuit is to be designed by treating the unused states as don’t-care conditions. From the above characteristic table, we can directly write the next state equation as, $$Q\left ( t+1 \right )={T}'Q\left ( t \right )+TQ{\left ( t \right )}'$$, $$\Rightarrow Q\left ( t+1 \right )=T\oplus Q\left ( t \right )$$. On this channel you can get education and knowledge for general issues and topics. State Table/Diagram Specification There is no algorithmic way to construct the state table from a word description of the circuit. Hence a D flip – flop is similar to SR flip – flop in which the two inputs are complement to each other, so there will be no chance of any intermediate state occurs. The following table shows the state table of SR flip-flop. In general, the flip-flops we will be using match the diagram below. D Flip Flop. by Sidhartha • November 5, 2015 • 22 Comments. Clock – LOW; D – 0 ; PR – 0 ; CL – 1 ; Q – 0 ; Q’ – 1. The Q and Q’ represents the output states of the flip-flop. The term digital in electronics represents the data generation, processing or storing in the form of two states. Flip-flop Review. The circuit diagram of D flip-flop is shown in the following figure. The circuit diagram and truth table is given below. Here, we considered the inputs of SR flip-flop as S = J Q(t)’ and R = KQ(t) in order to utilize the modified SR flip-flop for 4 combinations of inputs. when the CLK = 0, the D flip-flop holds is previous state. The basic D Type flip-flop shown in Fig. By using three variable K-Map, we can get the simplified expression for next state, Q(t + 1). The D(Data) is the input state for the D flip-flop. The operation of JK flip-flop is similar to SR flip-flop. Hence, T flip-flop can be used in counters. The circuit diagram of D flip – flop is shown in below figure. D flip – flops are also called as “Delay flip – flop” or “Data flip – flop”. Design of Sequential Circuits . And these AND gate inputs are fed back with the present state output Q and its complement Q’ to each AND gate. Subscribe below to receive most popular news, articles and DIY projects from Circuit Digest. This example is taken from P. K. Lala, Practical Digital Logic Design and Testing, Prentice Hall, 1996, p.176. One D flip-flop for each state bit . Use positive edge triggered D flip-flop (shown in the below figure) to design the circuit. That means, the output of D flip-flop is insensitive to the changes in the input, D except for active transition of the clock signal. Here in this article we will discuss about D type Flip Flop. state diagram is shown in Fig.P5-19. This example is taken from T. L. Floyd, Digital Fundamentals, Fourth Edition, Macmillan Publishing, 1990, p.395. This circuit has two inputs J & K and two outputs Q(t) & Q(t)’. state diagram/state table/circuit diagram (using D-flip flop) - Digital Logic Design - Duration: 9:05. The output of T flip-flop always toggles for every positive transition of the clock signal, when input T remains at logic High (1). However if one considers the initial states to be J = K = 0, Q = 1 and Q̅ = 0, then X 1 = X 2 = 0 which results in Q = 1 and Q̅ = 0. State diagram of d flip flop is same as applied input it means. Due to its versatility they are available as IC packages. State 3: Clock – LOW ; D – 0 ; PR – 1 ; CL – 1 ; Q – 1 ; Q’ – 1. I'm trying to create a simple state-diagram for a JK flip-flop, and this is what I've come up with. It is obtained by connecting the same input ‘T’ to both inputs of JK flip-flop. Similarly a flip-flop with two NAND gates can be formed. Predicting A Recession, Blender Stencil Opacity, Bat Ball Clipart Black And White, Module 'statsmodels Formula Api Has No Attribute 'ols, Kenmore Refrigerator Crisper Drawer Replacement, Spyderco Native 5 Lightweight Vs Para 3 Lightweight, "> 2 states 2 flip-flops => 4 states 3 flip3 flip-flops => 8 statesflops => 8 states 4 flip-flops => 16 states The operation of T flip-flop is same as that of JK flip-flop. Analysing the above assembly as a three stage structure considering previous state(Q’) to be 0. Q t is denotes the output of the present state and Q t+1 denotes the output of next state. Toggle t flip flop. Similarly when Q=0 and Q’=1,the flip flop is said to be in CLEAR state. So … Each flip-flop is in the set state when Q=1 and in the reset state when Q=0. 9.7. and 9.8 respectively. Glad that this project helped you. Table 3 shows the state diagrams of the four types of flip-flops. Again, this gets divided into positive edge triggered D flip flop and negative edge triggered D flip-flop. In SR NAND Gate Bistable circuit, the undefined input condition of SET = "0" and RESET = "0" is forbidden. a) Use D flip-flops in the design b) Use J-K flip-flops in the design Fig.P5-19 Instead, ... D flip-flops are the ones found in almost all PLDs. From the above state table, we can directly write the next state equation as. SR Flip Flop- SR flip flop is the simplest type of flip flops. T Flip-flop: The name T flip-flop is termed from the nature of toggling operation. Hence, the regulated 5V output is used as the Vcc and pin supply to the IC. So these flip – flops are also called Toggle flip – flops. The latches can also be understood as Bistable Multivibrator as two stable states. The circuit diagram of T flip-flop is shown in the following figure. They are used to store 1 – bit binary data. State diagrams of the four types of flip-flops. Easiest way to go from the state diagram to a circuit is to assign a flip-flop to each state. State Diagrams and State Table Examples . Draw state table • 5. The and gate therefore produces logic 1 at its output only for the 45ns when both a and b are at logic 1 after the rising edge of the clock pulse. There is no indeterminate condition, in the operation of JK flip flop i.e. Gated D flip flop or also known as level triggered D flip flop has an extra control input known as “Enable” or “clock” input. The block diagram of 3-bit SISO shift register is shown in the following figure. The state diagram is.Q Q(next) S R0 0 0 X0 1 1 01 0 0 11 1 X 0 6. The circuit is to be designed by treating the unused states as don’t-care conditions. From the above characteristic table, we can directly write the next state equation as, $$Q\left ( t+1 \right )={T}'Q\left ( t \right )+TQ{\left ( t \right )}'$$, $$\Rightarrow Q\left ( t+1 \right )=T\oplus Q\left ( t \right )$$. On this channel you can get education and knowledge for general issues and topics. State Table/Diagram Specification There is no algorithmic way to construct the state table from a word description of the circuit. Hence a D flip – flop is similar to SR flip – flop in which the two inputs are complement to each other, so there will be no chance of any intermediate state occurs. The following table shows the state table of SR flip-flop. In general, the flip-flops we will be using match the diagram below. D Flip Flop. by Sidhartha • November 5, 2015 • 22 Comments. Clock – LOW; D – 0 ; PR – 0 ; CL – 1 ; Q – 0 ; Q’ – 1. The Q and Q’ represents the output states of the flip-flop. The term digital in electronics represents the data generation, processing or storing in the form of two states. Flip-flop Review. The circuit diagram of D flip-flop is shown in the following figure. The circuit diagram and truth table is given below. Here, we considered the inputs of SR flip-flop as S = J Q(t)’ and R = KQ(t) in order to utilize the modified SR flip-flop for 4 combinations of inputs. when the CLK = 0, the D flip-flop holds is previous state. The basic D Type flip-flop shown in Fig. By using three variable K-Map, we can get the simplified expression for next state, Q(t + 1). The D(Data) is the input state for the D flip-flop. The operation of JK flip-flop is similar to SR flip-flop. Hence, T flip-flop can be used in counters. The circuit diagram of D flip – flop is shown in below figure. D flip – flops are also called as “Delay flip – flop” or “Data flip – flop”. Design of Sequential Circuits . And these AND gate inputs are fed back with the present state output Q and its complement Q’ to each AND gate. Subscribe below to receive most popular news, articles and DIY projects from Circuit Digest. This example is taken from P. K. Lala, Practical Digital Logic Design and Testing, Prentice Hall, 1996, p.176. One D flip-flop for each state bit . Use positive edge triggered D flip-flop (shown in the below figure) to design the circuit. That means, the output of D flip-flop is insensitive to the changes in the input, D except for active transition of the clock signal. Here in this article we will discuss about D type Flip Flop. state diagram is shown in Fig.P5-19. This example is taken from T. L. Floyd, Digital Fundamentals, Fourth Edition, Macmillan Publishing, 1990, p.395. This circuit has two inputs J & K and two outputs Q(t) & Q(t)’. state diagram/state table/circuit diagram (using D-flip flop) - Digital Logic Design - Duration: 9:05. The output of T flip-flop always toggles for every positive transition of the clock signal, when input T remains at logic High (1). However if one considers the initial states to be J = K = 0, Q = 1 and Q̅ = 0, then X 1 = X 2 = 0 which results in Q = 1 and Q̅ = 0. State diagram of d flip flop is same as applied input it means. Due to its versatility they are available as IC packages. State 3: Clock – LOW ; D – 0 ; PR – 1 ; CL – 1 ; Q – 1 ; Q’ – 1. I'm trying to create a simple state-diagram for a JK flip-flop, and this is what I've come up with. It is obtained by connecting the same input ‘T’ to both inputs of JK flip-flop. Similarly a flip-flop with two NAND gates can be formed. Predicting A Recession, Blender Stencil Opacity, Bat Ball Clipart Black And White, Module 'statsmodels Formula Api Has No Attribute 'ols, Kenmore Refrigerator Crisper Drawer Replacement, Spyderco Native 5 Lightweight Vs Para 3 Lightweight, ">

# state diagram for d flip flop

Thus, D flip-flop is a controlled Bi-stable latch where the clock signal is the control signal. The following table shows the characteristic table of JK flip-flop. Edge-triggered Flip-Flop, State Table, State Diagram . The IC used here is HEF4013BP (Dual D-type flip-flop). The flip flop is a basic building block of sequential logic circuits. Q=1, Q’=0. So, we eliminated the other two combinations of J & K, for which those two values are complement to each other in T flip-flop. Similarly, a T flip – flop can be constructed by modifying D flip – flop. Working is correct. In first method, cascade two latches in such a way that the first latch is enabled for every positive clock pulse and second latch is enabled for every negative clock pulse. There are two inputs to the flip-flop set and reset. Characteristic Equation Q(next) = D D Flip-flop symbol &CharacteristicTable. The column that corresponds to each Flip Flop describes what input we must give the Flip Flop in order to go from the Current State to the Next State. But, the important thing to consider is all these can occur only in the presence of the clock signal. Construction of SR Flip Flop- There are following two methods for constructing a SR flip flop- … Let's refresh our memory on flip-flops. We have used a LM7805 regulator to limit the LED voltage. 2. Next state of D flip-flop is always equal to data input, D for every positive transition of the clock signal. Lose the control by the input, which first goes to 1, and the other input remains "0" by which the resulting state of the latch is controlled. For example, (c) is the flip-flop for state I. Outputs are energised via OR gates. The IC HEF4013BP power source VDD ranges from 0 to 18V and the data is available in the datasheet. When the CLK=1, it operate as a normal D flip-flop. Example • Design a sequential circuit to recognize the input sequence 1101. share | improve this question | follow | asked May 31 '15 at 22:28. martin martin. Design of Counters. Therefore, the simplified expression for next state Q(t + 1) is, $Q\left ( t+1 \right )=S+{R}'Q\left ( t \right )$. This circuit has single input T and two outputs Q(t) & Q(t)’. They are one of the widely used flip – flops in digital electronics. Here, Q(t) & Q(t + 1) are present state & next state respectively. D flip-flop can be built using NAND gate or with NOR gate. ... Flip flops & State Diagram Tutorial Pt 1 - Duration: 19:27. The door-open output, for example, is required in states I, 3, 5, 7 and is given by the circuit in (d). Clock – LOW ; D – 0 ; PR – 1 ; CL – 0 ; Q – 1 ; Q’ – 0. It is a clocked flip flop. The basic D Type flip-flop shown in Fig. The operation of D flip-flop is similar to D Latch. The pins CLK, CL, D and PR are normally pulled down in initial state as shown below. Whereas, SR latch operates with enable signal. State 4: Clock – HIGH ; D – 0 ; PR – 0 ; CL – 0 ; Q – 0 ; Q’ – 1. Formulation: Draw a state diagram • 3. We can implement flip-flops in two methods. SR flip-flop operates with only positive clock transitions or negative clock transitions. This flip-flop possesses a property of holding a state until any further signal applied. Suggested state definition tables, transition diagrams, transition tables, K-maps for the respective logic functions, and schematics of the implementation using flipflops and logic gates for both a D flip-flop and a J-K flip-flop scenario will be given. D Type Flip-Flop: Circuit, Truth Table and Working, What is Switch Bouncing and How to prevent it using Debounce Circuit, Shift Registers: Introduction, Types, Working and Applications, T Flip-Flop: Circuit, Truth Table and Working, JK Flip-Flop: Circuit, Truth Table and Working, SR Flip-Flop with NAND Gates: Circuit, Truth Table and Working, Driving a 7-Segment Display using a BCD to 7 Segment Driver IC (CD4511), Mizu-P25™ Miniature Waterproof Connectors, Quick Disconnect Solderless Ring Terminal Jumpers, Micro Power Distribution Box (µPDB) Sealed Modules, High-Performance Single-Chip SAR Analog-to-Digital-Converter (ADC) for Telemetry, Tracking, and Control Payloads in Radiation-Hardened Space Applications, All-in-one LIN Motor Driver IC from Melexis Reduces BoM and Simplifies Design in Automotive Mechatronic Applications, High Performance 750V SiC FETs to Accelerate Power Gains in Charging and Energy Storage Applications, New STM32Cube Expansion Package Dedicated for AI-Based Industrial Condition Monitoring, New ESP32-C3 Microcontroller from Espressif with RISC-V Single Core CPU for Ultra-Low Power, Secure IoT Applications, How to Design a Push Pull Converter – Basic Theory, Construction, and Demonstration, Are Solar Powered Electric Cars Possible? Below snapshot shows it. D Flip Flop. By using three variable K-Map, we can get the simplified expression for next state, Q(t + 1). Because if you want to add the effect of the reset and set entries to the JK FF (which most circuits have), then the extra states (Q = 0 and /Q = 0, and both at 1) are possible.. In D flip – flop, the output QPREV is XORed with the T input and given at the D input. Draw the state diagram for the finite state machine below. state diagram is shown in Fig.P5-19. Since the CLOCK is LOW to HIGH edge triggered, D input button should be pressed before pressing the CLOCK button. This is one of a series of videos where I cover concepts relating to digital electronics. Also, each flip-flop can move from one state to another, or it can re-enter the same state. Thus, this latching process in hardware is done using certain components like latch or Flip-flop, Multiplexer, Demultiplexer, Encoders, Decoders and etc collectively called as Sequential logic circuits. Get more help from Chegg. The clock has to be high for the inputs to get active. The major drawback of SR flip – flop is the race around condition which in D flip – flop is eliminated (because of the inverted inputs). The logic state of the master flip flop is transferred to the slave flip flop, and the disabled master flip flop can acquire new inputs without affecting the output. and go is a JK flip-flop. Reasons Why We Don’t Have One Commercially Available Yet, Sanjeev Sharma, CEO of Swaayatt Robots on How They are Building a Robust and Scalable Autonomous Driving Technology without the Use of Lidars or Radars, How Drones can Minimize Cost and Improve Efficiency in Solar Power Plant Installation and Maintenance, Important Drone Regulations That Every Drone Enthusiasts Should Be Aware of Before the First Flight, AJAX with ESP8266: Dynamic Web Page Update Without Reloading, Build a Portable Step Counter using ATtiny85 and MPU6050, IoT Based Air Quality Index Monitoring System – Monitor PM2.5, PM10, and CO using ESP32, Programming ATtiny85 IC directly through USB using Digispark Bootloader, Portable Arduino Weighing Machine with Set Weight Option for Retail Packing. Below are the pin diagram and the corresponding description of the pins. In this article, we will discuss about SR Flip Flop. We can construct a T flip – flop by connecting AND gates as input to the NOR gate SR latch. The column that corresponds to each Flip Flop describes what input we must give the Flip Flop in order to go from the Current State to the Next State. 0/1 00 01 1/0 0/1 (1/1 1/0 0/0 0/0 10 11 1/1 if states are AB, then A is D and B is JK flip-flop). So that the combination of these two latches become a flip-flop. When it reaches “1111”, it should revert back to “0000” after the next edge. JK flip-flop is the modified version of SR flip-flop. it has no ambiguous state. For the State 4 inputs the RED led glows indicating the Q’ to be HIGH and GREEN led shows Q to be LOW. February 6, 2012 ECE 152A - Digital Design Principles 3 Reading Assignment Brown and Vranesic (cont) 7Flip-Flops, Registers, Counters and a Simple Processor (cont) 7.4 Master-Slave and Edge-Triggered D Flip-Flops 7.4.1 Master-Slave D Flip-Flop 7.4.2 Edge-Triggered D Flip-Flop 7.4.3 D Flip-Flop with Clear and Preset 7.4.4 Flip-Flop Timing Parameters (2nd edition) The following table shows the characteristic table of SR flip-flop. Let’s construct the truth table for the 4-bit up counter using D-FF Analyze the circuit obtained from the design to determine the effect of the unused states. This circuit has two inputs S & R and two outputs Q(t) & Q(t)’. Force both outputs to be 1. Connecting the output feedback to the input, in SR flip – flop. But, this flip-flop affects the outputs only when positive transition of the clock signal is applied instead of active enable. This state is stable and stays there until the next clock and input. Here, Q(t) & Q(t + 1) are present state & next state respectively. Figure 4: JK Flip Flop. Implementation of the counter using S-R flip-flop requires the use of S-R flip-flop transition table in step 3. Below snapshot shows it. The buttons D (Data), PR (Preset), CL (Clear) are the inputs for the D flip-flop. It is a clocked flip flop. The circuit diagram for a JK flip flop is shown in Figure 4. This indicates that the state of flip-flop outputs Q and Q̅ remains unchanged for the case of J = K = 0. That means, output of one D flip-flop is connected as the input of next D flip-flop. All these flip-flops are synchronous with each other since, the same clock signal is applied to each one. Circuit, State Diagram, State Table State: flip-flop output combination Present state: before clock Next state: after clock State transition <= clock 1 flip-flop => 2 states 2 flip-flops => 4 states 3 flip3 flip-flops => 8 statesflops => 8 states 4 flip-flops => 16 states The operation of T flip-flop is same as that of JK flip-flop. Analysing the above assembly as a three stage structure considering previous state(Q’) to be 0. Q t is denotes the output of the present state and Q t+1 denotes the output of next state. Toggle t flip flop. Similarly when Q=0 and Q’=1,the flip flop is said to be in CLEAR state. So … Each flip-flop is in the set state when Q=1 and in the reset state when Q=0. 9.7. and 9.8 respectively. Glad that this project helped you. Table 3 shows the state diagrams of the four types of flip-flops. Again, this gets divided into positive edge triggered D flip flop and negative edge triggered D flip-flop. In SR NAND Gate Bistable circuit, the undefined input condition of SET = "0" and RESET = "0" is forbidden. a) Use D flip-flops in the design b) Use J-K flip-flops in the design Fig.P5-19 Instead, ... D flip-flops are the ones found in almost all PLDs. From the above state table, we can directly write the next state equation as. SR Flip Flop- SR flip flop is the simplest type of flip flops. T Flip-flop: The name T flip-flop is termed from the nature of toggling operation. Hence, the regulated 5V output is used as the Vcc and pin supply to the IC. So these flip – flops are also called Toggle flip – flops. The latches can also be understood as Bistable Multivibrator as two stable states. The circuit diagram of T flip-flop is shown in the following figure. They are used to store 1 – bit binary data. State diagrams of the four types of flip-flops. Easiest way to go from the state diagram to a circuit is to assign a flip-flop to each state. State Diagrams and State Table Examples . Draw state table • 5. The and gate therefore produces logic 1 at its output only for the 45ns when both a and b are at logic 1 after the rising edge of the clock pulse. There is no indeterminate condition, in the operation of JK flip flop i.e. Gated D flip flop or also known as level triggered D flip flop has an extra control input known as “Enable” or “clock” input. The block diagram of 3-bit SISO shift register is shown in the following figure. The state diagram is.Q Q(next) S R0 0 0 X0 1 1 01 0 0 11 1 X 0 6. The circuit is to be designed by treating the unused states as don’t-care conditions. From the above characteristic table, we can directly write the next state equation as, $$Q\left ( t+1 \right )={T}'Q\left ( t \right )+TQ{\left ( t \right )}'$$, $$\Rightarrow Q\left ( t+1 \right )=T\oplus Q\left ( t \right )$$. On this channel you can get education and knowledge for general issues and topics. State Table/Diagram Specification There is no algorithmic way to construct the state table from a word description of the circuit. Hence a D flip – flop is similar to SR flip – flop in which the two inputs are complement to each other, so there will be no chance of any intermediate state occurs. The following table shows the state table of SR flip-flop. In general, the flip-flops we will be using match the diagram below. D Flip Flop. by Sidhartha • November 5, 2015 • 22 Comments. Clock – LOW; D – 0 ; PR – 0 ; CL – 1 ; Q – 0 ; Q’ – 1. The Q and Q’ represents the output states of the flip-flop. The term digital in electronics represents the data generation, processing or storing in the form of two states. Flip-flop Review. The circuit diagram of D flip-flop is shown in the following figure. The circuit diagram and truth table is given below. Here, we considered the inputs of SR flip-flop as S = J Q(t)’ and R = KQ(t) in order to utilize the modified SR flip-flop for 4 combinations of inputs. when the CLK = 0, the D flip-flop holds is previous state. The basic D Type flip-flop shown in Fig. By using three variable K-Map, we can get the simplified expression for next state, Q(t + 1). The D(Data) is the input state for the D flip-flop. The operation of JK flip-flop is similar to SR flip-flop. Hence, T flip-flop can be used in counters. The circuit diagram of D flip – flop is shown in below figure. D flip – flops are also called as “Delay flip – flop” or “Data flip – flop”. Design of Sequential Circuits . And these AND gate inputs are fed back with the present state output Q and its complement Q’ to each AND gate. Subscribe below to receive most popular news, articles and DIY projects from Circuit Digest. This example is taken from P. K. Lala, Practical Digital Logic Design and Testing, Prentice Hall, 1996, p.176. One D flip-flop for each state bit . Use positive edge triggered D flip-flop (shown in the below figure) to design the circuit. That means, the output of D flip-flop is insensitive to the changes in the input, D except for active transition of the clock signal. Here in this article we will discuss about D type Flip Flop. state diagram is shown in Fig.P5-19. This example is taken from T. L. Floyd, Digital Fundamentals, Fourth Edition, Macmillan Publishing, 1990, p.395. This circuit has two inputs J & K and two outputs Q(t) & Q(t)’. state diagram/state table/circuit diagram (using D-flip flop) - Digital Logic Design - Duration: 9:05. The output of T flip-flop always toggles for every positive transition of the clock signal, when input T remains at logic High (1). However if one considers the initial states to be J = K = 0, Q = 1 and Q̅ = 0, then X 1 = X 2 = 0 which results in Q = 1 and Q̅ = 0. State diagram of d flip flop is same as applied input it means. Due to its versatility they are available as IC packages. State 3: Clock – LOW ; D – 0 ; PR – 1 ; CL – 1 ; Q – 1 ; Q’ – 1. I'm trying to create a simple state-diagram for a JK flip-flop, and this is what I've come up with. It is obtained by connecting the same input ‘T’ to both inputs of JK flip-flop. Similarly a flip-flop with two NAND gates can be formed.