Flip Flop
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Computers and calculators use Flip-flop for their memory?? A flip flop is an electronic circuit with two stable states(High/Low) that can be used to store binary data.
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Flip flop
flip flop,introduction,types,. SR Flip Flop
a.SR Flip Flop Active Low = NAND gate Latch
b. SR Flip Flop Active High = NOR gate Latch
2. Clocked SR Flip Flop
3. JK Flip Flop
4. JK Flip Flop With Pre-set And Clear
5. T Flip Flop
6. D Flip Flop
7. Master-Slave Edge-Triggered Flip-Flop
The Used of Flip Flop:
Latches and flip flops
This document discusses latches and flip-flops. It describes the SR latch, gated SR latch, D latch, and gated D latch. It also covers edge-triggered flip-flops including the SR, D, and JK flip-flops. The key uses of flip-flops are for data storage, data transfer, counting, and frequency division in digital circuits and sequential logic.
Flip Flop & RS Latch
This document provides an introduction and overview of flip flops and RS latches. It defines a flip flop as a circuit that has two stable states and can store state information. It describes the main types of flip flops as asynchronous and synchronous, and lists some examples like the RS latch and JK flip flop. It then explains the key differences between asynchronous and synchronous circuits. The document proceeds to describe the RS latch in more detail, including providing its block diagram, logical diagram using NAND gates, truth table, and descriptions of its inputs, outputs, operation, and states.
JK flip flops
JK flip-flops have two outputs, Q and Q', and four modes of operation: hold, set, reset, toggle. The primary output is Q. There are two stable states that can store state information. JK flip-flops are used for data storage in registers, counting in counters, and frequency division. They can divide the frequency of a periodic waveform in half by toggling on each input clock pulse.
Flip flop
1. A flip-flop is a basic element of sequential circuits that has two stable states and whose output depends on both the current input and its previous state.
2. An SR flip-flop can be constructed using two NOR gates, with states that are set by a high S input and reset by a high R input.
3. Gated flip-flops only change state in response to changes at the clock input, allowing the circuit response to be controlled at specific times.
Sequential circuits in Digital Electronics
The document explains about the concepts of sequential circuits in Digital electronics.
This will be helpful for the beginners in VLSI and electronics students.
Flip-Flop || Digital Electronics
The document discusses flip-flops, which are basic electronic circuits that have two stable states and can serve as one bit of digital memory. It defines what a flip-flop is and describes several common types of flip-flops, including SR, JK, T, D, and master-slave edge-triggered flip-flops. The document provides brief explanations of how each flip-flop type works and is implemented using logic gates.
Counters
This document discusses different types of counters used in digital circuits. It defines a counter as a sequential circuit that cycles through a sequence of states in response to clock pulses. Binary counters count in binary and can count from 0 to 2n-1 with n flip-flops. Asynchronous counters have flip-flops that are not triggered simultaneously by a clock, while synchronous counters use a common clock for all flip-flops. Other counter types include ring counters, Johnson counters, and decade counters. The document provides examples of binary, asynchronous, and synchronous counters and discusses their applications in areas like timing sequences and addressing memory.
Recommended
Flip flop
flip flop,introduction,types,. SR Flip Flop
a.SR Flip Flop Active Low = NAND gate Latch
b. SR Flip Flop Active High = NOR gate Latch
2. Clocked SR Flip Flop
3. JK Flip Flop
4. JK Flip Flop With Pre-set And Clear
5. T Flip Flop
6. D Flip Flop
7. Master-Slave Edge-Triggered Flip-Flop
The Used of Flip Flop:
Latches and flip flops
This document discusses latches and flip-flops. It describes the SR latch, gated SR latch, D latch, and gated D latch. It also covers edge-triggered flip-flops including the SR, D, and JK flip-flops. The key uses of flip-flops are for data storage, data transfer, counting, and frequency division in digital circuits and sequential logic.
Flip Flop & RS Latch
This document provides an introduction and overview of flip flops and RS latches. It defines a flip flop as a circuit that has two stable states and can store state information. It describes the main types of flip flops as asynchronous and synchronous, and lists some examples like the RS latch and JK flip flop. It then explains the key differences between asynchronous and synchronous circuits. The document proceeds to describe the RS latch in more detail, including providing its block diagram, logical diagram using NAND gates, truth table, and descriptions of its inputs, outputs, operation, and states.
JK flip flops
JK flip-flops have two outputs, Q and Q', and four modes of operation: hold, set, reset, toggle. The primary output is Q. There are two stable states that can store state information. JK flip-flops are used for data storage in registers, counting in counters, and frequency division. They can divide the frequency of a periodic waveform in half by toggling on each input clock pulse.
Flip flop
1. A flip-flop is a basic element of sequential circuits that has two stable states and whose output depends on both the current input and its previous state.
2. An SR flip-flop can be constructed using two NOR gates, with states that are set by a high S input and reset by a high R input.
3. Gated flip-flops only change state in response to changes at the clock input, allowing the circuit response to be controlled at specific times.
Sequential circuits in Digital Electronics
The document explains about the concepts of sequential circuits in Digital electronics.
This will be helpful for the beginners in VLSI and electronics students.
Flip-Flop || Digital Electronics
The document discusses flip-flops, which are basic electronic circuits that have two stable states and can serve as one bit of digital memory. It defines what a flip-flop is and describes several common types of flip-flops, including SR, JK, T, D, and master-slave edge-triggered flip-flops. The document provides brief explanations of how each flip-flop type works and is implemented using logic gates.
Counters
This document discusses different types of counters used in digital circuits. It defines a counter as a sequential circuit that cycles through a sequence of states in response to clock pulses. Binary counters count in binary and can count from 0 to 2n-1 with n flip-flops. Asynchronous counters have flip-flops that are not triggered simultaneously by a clock, while synchronous counters use a common clock for all flip-flops. Other counter types include ring counters, Johnson counters, and decade counters. The document provides examples of binary, asynchronous, and synchronous counters and discusses their applications in areas like timing sequences and addressing memory.
All flipflop
This document discusses different types of flip flops including S-R, D, J-K, and T flip flops. It provides circuit diagrams and truth tables for each type. S-R flip flops can be made using NOR or NAND gates and have set, reset, and memory states. D flip flops are a modification of clocked S-R flip flops and pass the input to the output on a clock pulse. J-K flip flops are also based on S-R flip flops and toggle the output when both inputs are high. T flip flops are a simplified version of J-K flip flops where the two inputs are connected, causing the output to toggle with each clock
Flip flop
This document discusses different types of flip-flops, which are basic sequential circuits that have two stable states and can store one bit of data. It describes common flip-flop types like the S-R latch, clocked S-R flip-flop, J-K flip-flop, D flip-flop, and T flip-flop. It also covers the master-slave J-K flip-flop configuration and differences between latches and flip-flops. Flip-flops have applications in registers, frequency dividers, and digital counters.
Presentation On Flip-Flop
In electronics, a flip-flop or latch is a circuit that has two stable states and can be used to store state information – a bistable multivibrator. The circuit can be made to change state by signals applied to one or more control inputs and will have one or two outputs.
Latches & flip flop
This document summarizes sequential circuits and their basic components - latches and flip-flops. It describes how latches like the SR, S'R', and D latches work based on inputs but no clock signal, while flip-flops like edge-triggered flip-flops change state based on the clock edge. Examples of additional flip-flop inputs like preset, clear and clock enable are provided to control the output independent of the clock. Asynchronous sequential circuits can override the clock input using preset and clear inputs to directly control the output states.
Sequential Logic Circuit
Sequential circuits consist of combinational logic and memory elements like latches and flip-flops. There are different types of latches and flip-flops that differ in their trigger mechanisms and outputs, including SR latches, D latches, and edge-triggered flip-flops like SR, D, and JK flip-flops. Asynchronous inputs can directly set or reset flip-flop outputs independent of the clock signal.
Sequential circuits
The document discusses sequential circuits and different types of flip flops and counters. It describes how sequential circuits have memory and their output depends on current and past inputs. There are two main types of sequential circuits - asynchronous which can change state at any time and synchronous which use a clock signal to control when the output can change state. Common types of flip flops described include SR, JK, D and T flip flops. Counters can be asynchronous with the clock signal rippling through or synchronous where all flip flops share the same clock.
Presentation on Flip Flop
This presentation summarizes different types of flip flops used in digital circuits. It is presented by a group called Bug Free and includes 4 members. The presentation defines a flip flop as an electronic circuit with two stable states that can serve as one bit of memory. It then describes 5 main types of flip flops - SR, Clocked SR, JK, T, and D flip flops. Examples of each type of flip flop are shown using logic gates. Applications of flip flops mentioned include memory circuits, logic control devices, counters, and registers. A master-slave edge-triggered flip flop is also summarized.
J - K & MASTERSLAVE FLIPFLOPS
JK & MASTER SLAVE FLIP-FLOP
The document discusses the JK flip-flop, which removes invalid states that occur in other flip-flops. The JK flip-flop has inputs for J, K, preset, clear, and clock, and outputs of Q and Q'. It operates in four modes - hold, set, reset, toggle - based on the states of J and K. A master-slave JK flip-flop uses two JK flip-flops connected by an inverter to avoid race-around conditions, with the master capturing the input on the rising clock edge and the slave outputting it on the falling edge.
Types of flip flops ppt
This document discusses different types of flip-flops including edge-triggered flip-flops like the S-R, D, and J-K flip-flops. It describes their characteristics such as how their output changes depending on the input and clock signal. The S-R flip-flop can be set or reset. The D flip-flop copies its input to the output on the clock edge. The J-K flip-flop can toggle its output. The T flip-flop is a single-input version of the J-K flip-flop that toggles its output. Flip-flops have applications in data transfer and frequency division.
Latches and flip flop
This document discusses latches and flip flops, which are types of sequential logic circuits. It describes the basic components and functioning of latches like SR latches, D latches, and gated latches. For flip flops, it covers SR flip flops, D flip flops, JK flip flops, and master-slave flip flops. The key differences between latches and flip flops are that latches do not have a clock input while flip flops are edge-triggered by a clock signal. Latches and flip flops are used as basic storage elements in more complex sequential circuits and in computer components like registers and RAM.
D Flip Flop
The document discusses the design and analysis of a D-flip flop. It begins by introducing flip flops and their use for storing state information. It then discusses the need for a D-flip flop due to limitations in the basic SR flip flop. A D-flip flop overcomes these limitations using a gated SR flip flop with an inverter between the S and R inputs, allowing a single data input. The circuit and working of the D-flip flop are shown, noting it will store and output the data input while the clock is high.
Encoder & Decoder
This document discusses decoders and encoders. It defines a decoder as a circuit that accepts a binary input and activates only one output corresponding to the input. An encoder is the inverse, converting an active input to a coded output. Various types of decoders and encoders are described, including 2-to-4 decoders, 3-to-8 decoders, priority encoders, decimal-to-BCD encoders, and octal-to-binary encoders. Truth tables and logic diagrams are provided as examples. Expansion of decoders using multiple lower-order decoders is also covered.
Flipflop
Flip-flops are basic memory circuits that have two stable states and can store one bit of information. There are several types of flip-flops including SR, JK, D, and T. The SR flip-flop has two inputs called set and reset that determine its output state, while the JK flip-flop's J and K inputs can toggle its output. Flip-flops like the D and JK can be constructed from more basic flip-flops. For sequential circuits, flip-flops are made synchronous using a clock input so their state only changes at the clock edge.
Flip flops, counters & registers
1. Flip-flops and latches are types of memory elements used in sequential circuits. Latches change state based on input levels while flip-flops change state only on the rising or falling edge of a clock signal.
2. Common types of latches include the SR latch and D latch. Common types of flip-flops include the D flip-flop, JK flip-flop, and T flip-flop. Each has a characteristic truth table that defines its operation.
3. Sequential circuits can be analyzed using state tables that define the next state based on the present state and inputs. The state is defined by the values stored in all memory elements of the circuit.
Multiplexers
A multiplexer is a device that selects one of several analog or digital input signals and forwards the selected input into a single line. It has multiple data inputs, a single output, and select lines that determine which input is directed to the output. A demultiplexer performs the opposite function, taking a single input and distributing it to one of multiple outputs based on the select lines. Multiplexers and demultiplexers come in various configurations depending on the number of inputs and outputs, such as 2:1, 4:1, 16:1 or 32:1. They are basic building blocks used in digital systems and communication networks to efficiently route signals.
Sequential logic circuits flip-flop pt 1
1) The document discusses sequential logic circuits and flip-flops. It defines sequential logic as circuits whose output depends on the previous inputs and states, requiring memory elements like flip-flops.
2) Flip-flops are described as basic memory storage elements that have two stable states and can be switched between them. Common types include SR, JK, D and T flip-flops.
3) SR and T flip-flops are discussed in detail. Their symbols, truth tables, and implementations using logic gates are presented. SR flip-flops can be built using NOR or NAND gates and can be set, reset, or held in state based on input conditions.
Race around and master slave flip flop
The Reason Why we use master slave JK flip flop instead of simple level triggered flip flop is Racing condition which can be successfully avoided using two SR latches fed with inverted clocks.
D flip Flop
The D flip-flop is a modified form of the SR flip-flop that overcomes the shortcoming of invalid or indeterminate output when both S and R inputs are logic 0. It ensures the S and R inputs are never equal using an inverter between the inputs to allow a single D (data) input. The D flip-flop's truth table and characteristic table show that the next state Q(n+1) will always equal the current D input regardless of the clock or current state Qn. This simplified design makes D flip-flops useful in applications like data transfer, counters, registers, and frequency dividers.
BE PPT (FLIP FLOPS)
ppt on flip flops
contents :
Made by : Dhanesh RK Nair
WHAT IS FLIP FLOP?
In digital circuits, the flip-flop, is a kind of bistable multivibrator.
It is a Sequential Circuits / an electronic circuit which has two stable states and thereby is capable of serving as one bit of memory , bit 1 or bit 0.
TYPES OF FLIP FLOPS:
1. SR Flip Flop
2. Clocked SR Flip Flop
3. JK Flip Flop
4. JK Flip Flop With Preset And Clear
5. T Flip Flop
6. D Flip Flop
USES OF FLIP FLOPS:
For Memory circuits
For Logic Control Devices
For Counter Devices
For Register Devices
SR FLIP FLOP
The most basic Flip Flop is called SR Flip Flop.
The basic RS flip flop is an asynchronous device.
In asynchronous device, the outputs is immediately changed anytime one or more of the inputs change just as in combinational logic circuits.
It does not operate in step with a clock or timing.
CLOCKED SR FLIP FLOP
Additional clock input is added to change the SR flipflop from an element used in asynchronous sequential circuits to one, which can be used in synchronous circuits.
The clocked SR flip flop logic symbol that is triggered by the PGT
Its means that the flip flop can change the output states only when clock signal makes a transition from LOW to HIGH.
JK FLIP FLOP
Another types of Flip flop is JK flip flop.
It differs from the RS flip flops when J=K=1 condition is not indeterminate but it is defined to give a very useful changeover (toggle) action.
Toggle means that Q and Q(compliment) will switch to their opposite states.
The JK Flip flop has clock input Cp and two control inputs J and K.
Operation of Jk Flip Flop is completely described by truth table
T FLIP FLOP
The T flip flop has only the Toggle and Hold Operation.
If Toggle mode operation. The output will toggle from 1 to 0 or vice versa.
D FLIP FLOP
Also Known as Data Flip flop
Can be constructed from RS Flip Flop or JK Flip flop by addition of an inverter.
Inverter is connected so that the R input is always the inverse of S (or J input is always complementary of K).
The D flip flop will act as a storage element for a single binary digit (Bit).
THANKS....!!!!
SOME MORE CONTENTS :
In electronics, a flip-flop or latch is a circuit that has two stable states and can be used to store state information. A flip-flop is a bistable multivibrator. The circuit can be made to change state by signals applied to one or more control inputs and will have one or two outputs. It is the basic storage element in sequential logic. Flip-flops and latches are fundamental building blocks of digital electronics systems used in computers, communications, and many other types of systems.
Flip-flops and latches are used as data storage elements. A flip-flop stores a single bit (binary digit) of data; one of its two states represents a "one" and the other represents a "zero". Such data storage can be used for storage of state, and such a circuit is described as sequential logic.
THANKS!!!!!!!!!!!
latches
Latches are asynchronous electronic logic circuits with two stable output states. There are four main types of latches: D, T, SR, and JK latches. An SR latch has two inputs - SET (S) and RESET (R) - and two complementary outputs (Q and Q'). The state of the latch depends on whether input S or R is activated. A D latch similarly has one data input and two complementary outputs, but removes invalid states that can occur in an SR latch. Latches can be either active-high or active-low, depending on whether a high or low input triggers a state change.
Flip flop
This document discusses different types of flip flops used in digital circuits. It introduces flip flops as basic building blocks that can store one bit of data and are used in computer memory. It describes three main types of flip flops: R-S flip flops which can be set or reset, D flip flops which store input data on a clock edge, and J-K flip flops which can toggle their output. For each type, it provides details on their structure using logic gates, inputs/outputs, and truth tables that define their behavior.
Flip flops & registers
1) Flip-flops are basic memory elements that store one bit of information as a 1 or 0. Common types include RS, D, JK, and T flip-flops.
2) Registers are groups of flip-flops that can store multiple bits and perform data processing. Data is loaded into registers by transferring new information during a clock pulse.
3) Master-slave JK flip-flops prevent racing conditions by using two flip-flops triggered on opposite clock edges, with the slave output following the master.
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What's hot
All flipflop
This document discusses different types of flip flops including S-R, D, J-K, and T flip flops. It provides circuit diagrams and truth tables for each type. S-R flip flops can be made using NOR or NAND gates and have set, reset, and memory states. D flip flops are a modification of clocked S-R flip flops and pass the input to the output on a clock pulse. J-K flip flops are also based on S-R flip flops and toggle the output when both inputs are high. T flip flops are a simplified version of J-K flip flops where the two inputs are connected, causing the output to toggle with each clock
Flip flop
This document discusses different types of flip-flops, which are basic sequential circuits that have two stable states and can store one bit of data. It describes common flip-flop types like the S-R latch, clocked S-R flip-flop, J-K flip-flop, D flip-flop, and T flip-flop. It also covers the master-slave J-K flip-flop configuration and differences between latches and flip-flops. Flip-flops have applications in registers, frequency dividers, and digital counters.
Presentation On Flip-Flop
In electronics, a flip-flop or latch is a circuit that has two stable states and can be used to store state information – a bistable multivibrator. The circuit can be made to change state by signals applied to one or more control inputs and will have one or two outputs.
Latches & flip flop
This document summarizes sequential circuits and their basic components - latches and flip-flops. It describes how latches like the SR, S'R', and D latches work based on inputs but no clock signal, while flip-flops like edge-triggered flip-flops change state based on the clock edge. Examples of additional flip-flop inputs like preset, clear and clock enable are provided to control the output independent of the clock. Asynchronous sequential circuits can override the clock input using preset and clear inputs to directly control the output states.
Sequential Logic Circuit
Sequential circuits consist of combinational logic and memory elements like latches and flip-flops. There are different types of latches and flip-flops that differ in their trigger mechanisms and outputs, including SR latches, D latches, and edge-triggered flip-flops like SR, D, and JK flip-flops. Asynchronous inputs can directly set or reset flip-flop outputs independent of the clock signal.
Sequential circuits
The document discusses sequential circuits and different types of flip flops and counters. It describes how sequential circuits have memory and their output depends on current and past inputs. There are two main types of sequential circuits - asynchronous which can change state at any time and synchronous which use a clock signal to control when the output can change state. Common types of flip flops described include SR, JK, D and T flip flops. Counters can be asynchronous with the clock signal rippling through or synchronous where all flip flops share the same clock.
Presentation on Flip Flop
This presentation summarizes different types of flip flops used in digital circuits. It is presented by a group called Bug Free and includes 4 members. The presentation defines a flip flop as an electronic circuit with two stable states that can serve as one bit of memory. It then describes 5 main types of flip flops - SR, Clocked SR, JK, T, and D flip flops. Examples of each type of flip flop are shown using logic gates. Applications of flip flops mentioned include memory circuits, logic control devices, counters, and registers. A master-slave edge-triggered flip flop is also summarized.
J - K & MASTERSLAVE FLIPFLOPS
JK & MASTER SLAVE FLIP-FLOP
The document discusses the JK flip-flop, which removes invalid states that occur in other flip-flops. The JK flip-flop has inputs for J, K, preset, clear, and clock, and outputs of Q and Q'. It operates in four modes - hold, set, reset, toggle - based on the states of J and K. A master-slave JK flip-flop uses two JK flip-flops connected by an inverter to avoid race-around conditions, with the master capturing the input on the rising clock edge and the slave outputting it on the falling edge.
Types of flip flops ppt
This document discusses different types of flip-flops including edge-triggered flip-flops like the S-R, D, and J-K flip-flops. It describes their characteristics such as how their output changes depending on the input and clock signal. The S-R flip-flop can be set or reset. The D flip-flop copies its input to the output on the clock edge. The J-K flip-flop can toggle its output. The T flip-flop is a single-input version of the J-K flip-flop that toggles its output. Flip-flops have applications in data transfer and frequency division.
Latches and flip flop
This document discusses latches and flip flops, which are types of sequential logic circuits. It describes the basic components and functioning of latches like SR latches, D latches, and gated latches. For flip flops, it covers SR flip flops, D flip flops, JK flip flops, and master-slave flip flops. The key differences between latches and flip flops are that latches do not have a clock input while flip flops are edge-triggered by a clock signal. Latches and flip flops are used as basic storage elements in more complex sequential circuits and in computer components like registers and RAM.
D Flip Flop
The document discusses the design and analysis of a D-flip flop. It begins by introducing flip flops and their use for storing state information. It then discusses the need for a D-flip flop due to limitations in the basic SR flip flop. A D-flip flop overcomes these limitations using a gated SR flip flop with an inverter between the S and R inputs, allowing a single data input. The circuit and working of the D-flip flop are shown, noting it will store and output the data input while the clock is high.
Encoder & Decoder
This document discusses decoders and encoders. It defines a decoder as a circuit that accepts a binary input and activates only one output corresponding to the input. An encoder is the inverse, converting an active input to a coded output. Various types of decoders and encoders are described, including 2-to-4 decoders, 3-to-8 decoders, priority encoders, decimal-to-BCD encoders, and octal-to-binary encoders. Truth tables and logic diagrams are provided as examples. Expansion of decoders using multiple lower-order decoders is also covered.
Flipflop
Flip-flops are basic memory circuits that have two stable states and can store one bit of information. There are several types of flip-flops including SR, JK, D, and T. The SR flip-flop has two inputs called set and reset that determine its output state, while the JK flip-flop's J and K inputs can toggle its output. Flip-flops like the D and JK can be constructed from more basic flip-flops. For sequential circuits, flip-flops are made synchronous using a clock input so their state only changes at the clock edge.
Flip flops, counters & registers
1. Flip-flops and latches are types of memory elements used in sequential circuits. Latches change state based on input levels while flip-flops change state only on the rising or falling edge of a clock signal.
2. Common types of latches include the SR latch and D latch. Common types of flip-flops include the D flip-flop, JK flip-flop, and T flip-flop. Each has a characteristic truth table that defines its operation.
3. Sequential circuits can be analyzed using state tables that define the next state based on the present state and inputs. The state is defined by the values stored in all memory elements of the circuit.
Multiplexers
A multiplexer is a device that selects one of several analog or digital input signals and forwards the selected input into a single line. It has multiple data inputs, a single output, and select lines that determine which input is directed to the output. A demultiplexer performs the opposite function, taking a single input and distributing it to one of multiple outputs based on the select lines. Multiplexers and demultiplexers come in various configurations depending on the number of inputs and outputs, such as 2:1, 4:1, 16:1 or 32:1. They are basic building blocks used in digital systems and communication networks to efficiently route signals.
Sequential logic circuits flip-flop pt 1
1) The document discusses sequential logic circuits and flip-flops. It defines sequential logic as circuits whose output depends on the previous inputs and states, requiring memory elements like flip-flops.
2) Flip-flops are described as basic memory storage elements that have two stable states and can be switched between them. Common types include SR, JK, D and T flip-flops.
3) SR and T flip-flops are discussed in detail. Their symbols, truth tables, and implementations using logic gates are presented. SR flip-flops can be built using NOR or NAND gates and can be set, reset, or held in state based on input conditions.
Race around and master slave flip flop
The Reason Why we use master slave JK flip flop instead of simple level triggered flip flop is Racing condition which can be successfully avoided using two SR latches fed with inverted clocks.
D flip Flop
The D flip-flop is a modified form of the SR flip-flop that overcomes the shortcoming of invalid or indeterminate output when both S and R inputs are logic 0. It ensures the S and R inputs are never equal using an inverter between the inputs to allow a single D (data) input. The D flip-flop's truth table and characteristic table show that the next state Q(n+1) will always equal the current D input regardless of the clock or current state Qn. This simplified design makes D flip-flops useful in applications like data transfer, counters, registers, and frequency dividers.
BE PPT (FLIP FLOPS)
ppt on flip flops
contents :
Made by : Dhanesh RK Nair
WHAT IS FLIP FLOP?
In digital circuits, the flip-flop, is a kind of bistable multivibrator.
It is a Sequential Circuits / an electronic circuit which has two stable states and thereby is capable of serving as one bit of memory , bit 1 or bit 0.
TYPES OF FLIP FLOPS:
1. SR Flip Flop
2. Clocked SR Flip Flop
3. JK Flip Flop
4. JK Flip Flop With Preset And Clear
5. T Flip Flop
6. D Flip Flop
USES OF FLIP FLOPS:
For Memory circuits
For Logic Control Devices
For Counter Devices
For Register Devices
SR FLIP FLOP
The most basic Flip Flop is called SR Flip Flop.
The basic RS flip flop is an asynchronous device.
In asynchronous device, the outputs is immediately changed anytime one or more of the inputs change just as in combinational logic circuits.
It does not operate in step with a clock or timing.
CLOCKED SR FLIP FLOP
Additional clock input is added to change the SR flipflop from an element used in asynchronous sequential circuits to one, which can be used in synchronous circuits.
The clocked SR flip flop logic symbol that is triggered by the PGT
Its means that the flip flop can change the output states only when clock signal makes a transition from LOW to HIGH.
JK FLIP FLOP
Another types of Flip flop is JK flip flop.
It differs from the RS flip flops when J=K=1 condition is not indeterminate but it is defined to give a very useful changeover (toggle) action.
Toggle means that Q and Q(compliment) will switch to their opposite states.
The JK Flip flop has clock input Cp and two control inputs J and K.
Operation of Jk Flip Flop is completely described by truth table
T FLIP FLOP
The T flip flop has only the Toggle and Hold Operation.
If Toggle mode operation. The output will toggle from 1 to 0 or vice versa.
D FLIP FLOP
Also Known as Data Flip flop
Can be constructed from RS Flip Flop or JK Flip flop by addition of an inverter.
Inverter is connected so that the R input is always the inverse of S (or J input is always complementary of K).
The D flip flop will act as a storage element for a single binary digit (Bit).
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In electronics, a flip-flop or latch is a circuit that has two stable states and can be used to store state information. A flip-flop is a bistable multivibrator. The circuit can be made to change state by signals applied to one or more control inputs and will have one or two outputs. It is the basic storage element in sequential logic. Flip-flops and latches are fundamental building blocks of digital electronics systems used in computers, communications, and many other types of systems.
Flip-flops and latches are used as data storage elements. A flip-flop stores a single bit (binary digit) of data; one of its two states represents a "one" and the other represents a "zero". Such data storage can be used for storage of state, and such a circuit is described as sequential logic.
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latches
Latches are asynchronous electronic logic circuits with two stable output states. There are four main types of latches: D, T, SR, and JK latches. An SR latch has two inputs - SET (S) and RESET (R) - and two complementary outputs (Q and Q'). The state of the latch depends on whether input S or R is activated. A D latch similarly has one data input and two complementary outputs, but removes invalid states that can occur in an SR latch. Latches can be either active-high or active-low, depending on whether a high or low input triggers a state change.
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Flip Flop
- 1. Flip Flop
- 2. Do You Know?? Computers and calculators use Flip-flop for their memory??
- 3. What is Flip Flop? A flip flop is an electronic circuit with two stable states(High/Low) that can be used to store binary data. A combination of number of flip flops will produce some amount of memory. The stored data can be changed by applying varying inputs.
- 4. Continues….. Flip flop are basic building blocks in the memory of electronic devices Each flip flop can store one bit of data These are also called as sequential logic circuits.
- 5. Continues…. They are used in computers, communications, and many other types of systems. Flip-flops and are used as data storage elements. It is the basic storage element in sequential logic.
- 6. Types of flip flops Based on their operations, flip flops are basically 4 types. They are 1. R-S flip flop 2. D flip flop 3. J-K flip flop 4. T flip flop
- 7. S-R Flip Flop The S-R flip-flop is basic flip-flop among all the flip-flops. All the other flip flops are developed after SR-flip-flop. SR flip flop is represented as shown below.
- 8. Continues…. S-R stands for SET and RESET. This can also be called RS flip-flop. Difference is RS is inverted SR NAND and NOR gates were used as they are universal gates.
- 10. SR-Flip Flop Using NAND
- 11. D flip-flop In the SR flip flop an uncertain state occurred. This can be avoided by using D flip flop. Here D stands for “Data”. It is constructed from SR flip flop. The two inputs (S &R) of the clocked SR flip flop are connected to an inverter.
- 12. Continues….. It is one of the most widely used flip – flops. It has a clock signal (Clk) as one input and Data (D) as other. There are two outputs and these outputs are complement to each other.
- 13. Symbol
- 14. D flip – flop using NAND
- 15. Nasurallah Saeed
- 16. J-K Flip Flop JK flip – flop is named after Jack Kilby, an electrical engineer who invented IC. A JK flip – flop is a modification of SR flip – flop. In this the J input is similar to the set input of SR flip – flop and the K input is similar to the reset input of SR flip – flop
- 17. Continues…… The condition J = K = 1 which is not allowed in SR flip – flop (S = R = 1) is interpreted as a toggle command. The JK flip flop has i). Two data inputs J and K. ii). One clock signal input (CLK). iii). Two outputs Q and Q’.
- 18. Symbol
- 19. NAND SR flip – flop. It is similar to a modified NAND SR flip – flop.
- 20. T Flip Flop T flip flop is also known as “Toggle Flip – flop”. Toggle is to change the output to complement of the previous state in the presence of clock input signal. The T flip flop has i). T input. ii). One clock signal input (CLK). iii). Two outputs Q and Q’.
- 21. Symbol
- 22. NAND JK flip – flop
- 23. WHERE WE USE FLIP FLOPS?? we use them in memory elements like registers, for data storage. uses as counters, to count the increment or decrement of an event occurrence. Flip flops are used as frequency division circuits,
- 24. Continues… Flip flops are used as frequency division circuits, frequency division circuits are used to regularize the frequency of electronic circuits. We use shift registers (A special-type of registers) to transfer the data from one flip flop to another,