RS flip-flop using NOR gate
|
|
|
- Gwen Neal
- 5 years ago
- Views:
Transcription
1
2
3
4 RS flip-flop using NOR gate
5
6
7 Triggering and triggering methods Triggering : Applying train of pulses, to set or reset the memory cell is known as Triggering. Triggering methods:- There are basically two types of triggering. 1. Edge triggering : (i) Positive edge triggering, (ii) Negative edge triggering 2. Level triggering : (i) Positive level triggering, (ii) Negative level triggering
8 1. Edge triggering : The circuits which change their outputs only corresponding to the positive or negative edge of the clock input are called as edge triggered circuit.
9 Symbol of positive edge triggered flip-flop
10 Symbol of Negative edge triggered flip-flop
11 Level triggering : The circuits which change their outputs only corresponding to the positive or negative level of the clock input are called as level triggered circuit.
12 Symbol of positive level triggered flip-flop
13 Symbol of negative level triggered flip-flop
14 Clocked R-S flip-flop:- R clock S
15 Clock
16
17 S-R flip-flop with preset and clear In the flip-flop when the power is switched on, the state of the circuit is uncertain. In many applications it is desired to initially set or reset the flip-flop, i.e. the initial state of the flipflop is to be assigned. This is accomplished by using preset (Pr) and clear (Cr) inputs.
18 S-R flip-flop with preset and clear
19 Logic symbol for S-R flip-flop with preset and clear:-
20
21
22 J-K flip-flop:- The forbidden state of S-R flip-flop when S = R = 1 can be eliminated by converting it into JK flip-flop. The data inputs are J and K which are ANDed with Q and Q respectively to obtain S and R inputs i.e. S = J Q R = K Q.
23 J-K flip-flop:-
24 Logic symbol:-
25
26 J-K flip-flop using NAND gate:-
27
28 for J = K = 0, Q retains its previous value. for J = 1 and K = 0 sets the flip-flop. for J = 0 and K = 1 RESETS the flip-flop. for J = K = 1 Flip flop toggles between 0 and 1
29 Race around condition If J = K = 1 and Q = 0 and pulse is applied at the clock input. After a time interval t equal to propagation delay the output will change to Q = 1. Now we have J = K = 1 and Q = 1 and after another time interval of t the output will change back to Q = 0. Hence, for the duration tp of the clock pulse the output will oscillate back and forth between 0 and 1. At the end of clock pulse the value of Q is uncertain. This situation referred to as a race around condition.
30
31 Master-slave J-K flip-flop:-
32
33 D-type flip-flop:-
34
35
36 T-type flip-flop:- Symbol of T flip-flop T = 1,
37 IC Dual D-type positive edge triggered flip-flop
38
39 IC 7475 Edge triggered D-flip-flop
40
41 IC latch
42
43 EXCITATION TABLE OF FLIP-FLOP The truth table of flip-flop is also referred to as the characteristic table. In the design of sequential circuit, if the present state and next state of the circuit are specified and we have to find the input conditions that must prevail to cause the desired transition of the state. The tabulation of these conditions is known as excitation Table.
44
45 APPLICATION OF FLIP- FLOP 1.Bounce elimination switch 2. Latch 3. Registers 4. Counters 5. Memory
46 COUNTERS A circuit used for counting the number of pulses is known as a counter. The counters are referred to as modulo N (mod N) counter there are two types of counters. 1. Asynchronous counter (ripple counter) 2. Synchronous counter In case of asynchronous counter, all the flip-flops are not clocked simultaneously, whereas in synchronous counter all flip-flops are clocked simultaneously. Ring counter and twisted ring counters are examples of synchronous counter.
47 Normal binary counter counts from 0 to 2 N - 1, where N is the number flip-flops in the counter. In some cases, we want it to count to numbers other than 2 N - 1. This can be done by allowing the counter to skip states that are normally part of the counting sequence. There are a few methods of doing this. One of the most common methods is to use the CLEAR input on the flip-flops.
48 The 2-bit ripple counter circuit has four different states, each one corresponding to a count value. Similarly, a counter with n flip-flops can have 2 to the power n states. The number of states in a counter is known as its mod (modulo) number. Thus a 2-bit counter is a mod-4 counter. A mod-n counter may also described as a divide-byn counter. This is because the most significant flip-flop produces one pulse for every n pulses at the clock input of the least significant flip-flop. Thus, the above counter is an example of a divide-by-4 counter.
49 Ring counter:-
50 Waveforms of ring counter
51 Twisted Ring Counter In ring counter, if Q1 is connected to serial input instead of Q1 then the circuit is called as twisted ring counter. The flipflops are cleared first and then clock is applied.
52
53
54 Design a 3-bit synchronous counter using JK flipflop To design this counter, 3 flip-flops are required and 8 states are present. The excitation table of flip-flop can be written as
55
56
57 The k-maps and simplified expressions for all the flip-flops are as follows - Thus, the simplified equations are J C = Q B Q A K C = Q B Q A J B = Q A K B = Q A J A = 1 K A = 1
58 3-bit synchronous counter using JK FF
59 Design 3 bit synchronous counter using T flip-flops A 3 bit counter goes through 8 states thus it requires three flip-flops. The excitation table of T flip-flop is given as -
60
61
62
63 ASYNCHRONOUS COUNTER-up counter
64 Count sequence
65 Timing diagram of 3 bit asynchronous counter-up counter
66 Asynchronous Down Counters
67 Timing diagram of 3 bit asynchronous counter-down counter
68 A 3 bit asynchronous up-down counter
69 STUDY OF IC 7490:-
70 Timing diagram:-
71 Count sequence:-
72 Design a MOD 6 asynchronous counter using IC 7490.
73
74 MOD 20 counter using IC 7490
75 Design MOD 8 counter using IC 7490
76
77 APPLICATIONS OF COUNTERS 1. In digital clock. 2. In time measurement. 3. In the frequency counters. 4. In digital voltmeters. 5. In counter type A/D converter. 6. In digital triangular wave generator. 7. In frequency divider circuits.
78 COMPARISON OF SYNCHRONOUS AND ASYNCHRONOUS COUNTER
79 COMPARISON OF COUNTERS AND REGISTERS:-
80
81 DISADVANTAGE OF RIPPLE COUNTERS Every flip-flop has its own propagation delay. In ripple counter the output of previous flip-flop is used as clock for next flip-flop. Thus, the propagation delay goes on accumulating. Thus, as the number of flip-flops goes on increasing, the propagation delay increases. The frequency of clock pulse for reliable operations of counter is given by
82
RS flip-flop using NOR gate
RS flip-flop using NOR gate Triggering and triggering methods Triggering : Applying train of pulses, to set or reset the memory cell is known as Triggering. Triggering methods:- There are basically two
Chapter 6. Flip-Flops and Simple Flip-Flop Applications
Chapter 6 Flip-Flops and Simple Flip-Flop Applications Basic bistable element It is a circuit having two stable conditions (states). It can be used to store binary symbols. J. C. Huang, 2004 Digital Logic
Asynchronous (Ripple) Counters
Circuits for counting events are frequently used in computers and other digital systems. Since a counter circuit must remember its past states, it has to possess memory. The chapter about flip-flops introduced
Counter dan Register
Counter dan Register Introduction Circuits for counting events are frequently used in computers and other digital systems. Since a counter circuit must remember its past states, it has to possess memory.
Sri Vidya College of Engineering And Technology. Virudhunagar Department of Electrical and Electronics Engineering
Sri Vidya College of Engineering And Technology Virudhunagar 626 005 Department of Electrical and Electronics Engineering Year/ Semester/ Class : II/ III/ EEE Academic Year: 2017-2018 Subject Code/ Name:
EMT 125 Digital Electronic Principles I CHAPTER 6 : FLIP-FLOP
EMT 125 Digital Electronic Principles I CHAPTER 6 : FLIP-FLOP 1 Chapter Overview Latches Gated Latches Edge-triggered flip-flops Master-slave flip-flops Flip-flop operating characteristics Flip-flop applications
Counters
Counters A counter is the most versatile and useful subsystems in the digital system. A counter driven by a clock can be used to count the number of clock cycles. Since clock pulses occur at known intervals,
Other Flip-Flops. Lecture 27 1
Other Flip-Flops Other types of flip-flops can be constructed by using the D flip-flop and external logic. Two flip-flops less widely used in the design of digital systems are the JK and T flip-flops.
Lecture 8: Sequential Logic
Lecture 8: Sequential Logic Last lecture discussed how we can use digital electronics to do combinatorial logic we designed circuits that gave an immediate output when presented with a given set of inputs
Experiment 8 Introduction to Latches and Flip-Flops and registers
Experiment 8 Introduction to Latches and Flip-Flops and registers Introduction: The logic circuits that have been used until now were combinational logic circuits since the output of the device depends
YEDITEPE UNIVERSITY DEPARTMENT OF COMPUTER ENGINEERING. EXPERIMENT VIII: FLIP-FLOPS, COUNTERS 2014 Fall
YEDITEPE UNIVERSITY DEPARTMENT OF COMPUTER ENGINEERING EXPERIMENT VIII: FLIP-FLOPS, COUNTERS 2014 Fall Objective: - Dealing with the operation of simple sequential devices. Learning invalid condition in
SEQUENTIAL LOGIC. Satish Chandra Assistant Professor Department of Physics P P N College, Kanpur
SEQUENTIAL LOGIC Satish Chandra Assistant Professor Department of Physics P P N College, Kanpur www.satish0402.weebly.com OSCILLATORS Oscillators is an amplifier which derives its input from output. Oscillators
Chapter 4. Logic Design
Chapter 4 Logic Design 4.1 Introduction. In previous Chapter we studied gates and combinational circuits, which made by gates (AND, OR, NOT etc.). That can be represented by circuit diagram, truth table
Vignana Bharathi Institute of Technology UNIT 4 DLD
DLD UNIT IV Synchronous Sequential Circuits, Latches, Flip-flops, analysis of clocked sequential circuits, Registers, Shift registers, Ripple counters, Synchronous counters, other counters. Asynchronous
MC9211 Computer Organization
MC9211 Computer Organization Unit 2 : Combinational and Sequential Circuits Lesson2 : Sequential Circuits (KSB) (MCA) (2009-12/ODD) (2009-10/1 A&B) Coverage Lesson2 Outlines the formal procedures for the
UNIT-3: SEQUENTIAL LOGIC CIRCUITS
UNIT-3: SEQUENTIAL LOGIC CIRCUITS STRUCTURE 3. Objectives 3. Introduction 3.2 Sequential Logic Circuits 3.2. NAND Latch 3.2.2 RS Flip-Flop 3.2.3 D Flip-Flop 3.2.4 JK Flip-Flop 3.2.5 Edge Triggered RS Flip-Flop
NH 67, Karur Trichy Highways, Puliyur C.F, Karur District UNIT-III SEQUENTIAL CIRCUITS
NH 67, Karur Trichy Highways, Puliyur C.F, 639 114 Karur District DEPARTMENT OF ELETRONICS AND COMMUNICATION ENGINEERING COURSE NOTES SUBJECT: DIGITAL ELECTRONICS CLASS: II YEAR ECE SUBJECT CODE: EC2203
Introduction. NAND Gate Latch. Digital Logic Design 1 FLIP-FLOP. Digital Logic Design 1
2007 Introduction BK TP.HCM FLIP-FLOP So far we have seen Combinational Logic The output(s) depends only on the current values of the input variables Here we will look at Sequential Logic circuits The
LATCHES & FLIP-FLOP. Chapter 7
LATCHES & FLIP-FLOP Chapter 7 INTRODUCTION Latch and flip flops are categorized as bistable devices which have two stable states,called SET and RESET. They can retain either of this states indefinitely
Unit 11. Latches and Flip-Flops
Unit 11 Latches and Flip-Flops 1 Combinational Circuits A combinational circuit consists of logic gates whose outputs, at any time, are determined by combining the values of the inputs. For n input variables,
Module -5 Sequential Logic Design
Module -5 Sequential Logic Design 5.1. Motivation: In digital circuit theory, sequential logic is a type of logic circuit whose output depends not only on the present value of its input signals but on
UNIT IV. Sequential circuit
UNIT IV Sequential circuit Introduction In the previous session, we said that the output of a combinational circuit depends solely upon the input. The implication is that combinational circuits have no
Digital Logic Design Sequential Circuits. Dr. Basem ElHalawany
Digital Logic Design Sequential Circuits Dr. Basem ElHalawany Combinational vs Sequential inputs X Combinational Circuits outputs Z A combinational circuit: At any time, outputs depends only on inputs
Logic Gates, Timers, Flip-Flops & Counters. Subhasish Chandra Assistant Professor Department of Physics Institute of Forensic Science, Nagpur
Logic Gates, Timers, Flip-Flops & Counters Subhasish Chandra Assistant Professor Department of Physics Institute of Forensic Science, Nagpur Logic Gates Transistor NOT Gate Let I C be the collector current.
ASYNCHRONOUS COUNTER CIRCUITS
ASYNCHRONOUS COUNTER CIRCUITS Asynchronous counters do not have a common clock that controls all the Hipflop stages. The control clock is input into the first stage, or the LSB stage of the counter. The
EKT 121/4 ELEKTRONIK DIGIT 1
EKT 2/4 ELEKTRONIK DIGIT Kolej Universiti Kejuruteraan Utara Malaysia Sequential Logic Circuits - COUNTERS - LATCHES (review) S-R R Latch S-R R Latch Active-LOW input INPUTS OUTPUTS S R Q Q COMMENTS Q
Flip Flop. S-R Flip Flop. Sequential Circuits. Block diagram. Prepared by:- Anwar Bari
Sequential Circuits The combinational circuit does not use any memory. Hence the previous state of input does not have any effect on the present state of the circuit. But sequential circuit has memory
Scanned by CamScanner
NAVEEN RAJA VELCHURI DSD & Digital IC Applications Example: 2-bit asynchronous up counter: The 2-bit Asynchronous counter requires two flip-flops. Both flip-flop inputs are connected to logic 1, and initially
WINTER 14 EXAMINATION
Subject Code: 17320 WINTER 14 EXAMINATION Model Answer Important Instructions to examiners: 1) The answers should be examined by key words and not as word-to-word as given in the model answer scheme. 2)
COE 202: Digital Logic Design Sequential Circuits Part 1. Dr. Ahmad Almulhem ahmadsm AT kfupm Phone: Office:
COE 202: Digital Logic Design Sequential Circuits Part 1 Dr. Ahmad Almulhem Email: ahmadsm AT kfupm Phone: 860-7554 Office: 22-324 Objectives Sequential Circuits Memory Elements Latches Flip-Flops Combinational
IT T35 Digital system desigm y - ii /s - iii
UNIT - III Sequential Logic I Sequential circuits: latches flip flops analysis of clocked sequential circuits state reduction and assignments Registers and Counters: Registers shift registers ripple counters
Flip-Flops. Because of this the state of the latch may keep changing in circuits with feedback as long as the clock pulse remains active.
Flip-Flops Objectives The objectives of this lesson are to study: 1. Latches versus Flip-Flops 2. Master-Slave Flip-Flops 3. Timing Analysis of Master-Slave Flip-Flops 4. Different Types of Master-Slave
The outputs are formed by a combinational logic function of the inputs to the circuit or the values stored in the flip-flops (or both).
1 The outputs are formed by a combinational logic function of the inputs to the circuit or the values stored in the flip-flops (or both). The value that is stored in a flip-flop when the clock pulse occurs
Flip-Flops and Related Devices. Wen-Hung Liao, Ph.D. 4/11/2001
Flip-Flops and Related Devices Wen-Hung Liao, Ph.D. 4/11/2001 Objectives Recognize the various IEEE/ANSI flip-flop symbols. Use state transition diagrams to describe counter operation. Use flip-flops in
Digital Logic Design ENEE x. Lecture 19
Digital Logic Design ENEE 244-010x Lecture 19 Announcements Homework 8 due on Monday, 11/23. Agenda Last time: Timing Considerations (6.3) Master-Slave Flip-Flops (6.4) This time: Edge-Triggered Flip-Flops
Sequential Logic and Clocked Circuits
Sequential Logic and Clocked Circuits Clock or Timing Device Input Variables State or Memory Element Combinational Logic Elements From combinational logic, we move on to sequential logic. Sequential logic
(CSC-3501) Lecture 7 (07 Feb 2008) Seung-Jong Park (Jay) CSC S.J. Park. Announcement
Seung-Jong Park (Jay) http://www.csc.lsu.edu/~sjpark Computer Architecture (CSC-3501) Lecture 7 (07 Feb 2008) 1 Announcement 2 1 Combinational vs. Sequential Logic Combinational Logic Memoryless Outputs
ELCT201: DIGITAL LOGIC DESIGN
ELCT201: DIGITAL LOGIC DESIGN Dr. Eng. Haitham Omran, haitham.omran@guc.edu.eg Dr. Eng. Wassim Alexan, wassim.joseph@guc.edu.eg Lecture 6 Following the slides of Dr. Ahmed H. Madian ذو الحجة 1438 ه Winter
Sequential Digital Design. Laboratory Manual. Experiment #7. Counters
The Islamic University of Gaza Engineering Faculty Department of Computer Engineering Spring 2018 ECOM 2022 Khaleel I. Shaheen Sequential Digital Design Laboratory Manual Experiment #7 Counters Objectives
CHAPTER 4: Logic Circuits
CHAPTER 4: Logic Circuits II. Sequential Circuits Combinational circuits o The outputs depend only on the current input values o It uses only logic gates, decoders, multiplexers, ALUs Sequential circuits
Rangkaian Sekuensial. Flip-flop
Rangkaian Sekuensial Rangkaian Sekuensial Flip-flop Combinational versus Sequential Functions Logic functions are categorized as being either combinational (sometimes referred to as combinatorial) or sequential.
D Latch (Transparent Latch)
D Latch (Transparent Latch) -One way to eliminate the undesirable condition of the indeterminate state in the SR latch is to ensure that inputs S and R are never equal to 1 at the same time. This is done
Logic Design. Flip Flops, Registers and Counters
Logic Design Flip Flops, Registers and Counters Introduction Combinational circuits: value of each output depends only on the values of inputs Sequential Circuits: values of outputs depend on inputs and
Name Of The Experiment: Sequential circuit design Latch, Flip-flop and Registers
EEE 304 Experiment No. 07 Name Of The Experiment: Sequential circuit design Latch, Flip-flop and Registers Important: Submit your Prelab at the beginning of the lab. Prelab 1: Construct a S-R Latch and
Sequential Logic Circuit
Prof.Manoj avedia ( 98674297 ) (urallalone@yahoo.com) ` 4 Sequential Logic ircuit hapter-4(hours : Marks: )(269 Principle of Digital Electronics) SEUENTIL LOGI IRUIT 4. Introduction to Sequential Logic
Digital Fundamentals: A Systems Approach
Digital Fundamentals: A Systems Approach Counters Chapter 8 A System: Digital Clock Digital Clock: Counter Logic Diagram Digital Clock: Hours Counter & Decoders Finite State Machines Moore machine: One
UNIT III. Combinational Circuit- Block Diagram. Sequential Circuit- Block Diagram
UNIT III INTRODUCTION In combinational logic circuits, the outputs at any instant of time depend only on the input signals present at that time. For a change in input, the output occurs immediately. Combinational
VTU NOTES QUESTION PAPERS NEWS RESULTS FORUMS Registers
Registers Registers are a very important digital building block. A data register is used to store binary information appearing at the output of an encoding matrix.shift registers are a type of sequential
ELE2120 Digital Circuits and Systems. Tutorial Note 8
ELE2120 Digital Circuits and Systems Tutorial Note 8 Outline 1. Register 2. Counters 3. Synchronous Counter 4. Asynchronous Counter 5. Sequential Circuit Design Overview 1. Register Applications: temporally
INTRODUCTION TO SEQUENTIAL CIRCUITS
NOTE: Explanation Refer Class Notes Digital Circuits(15EECC203) INTRODUCTION TO SEQUENTIAL CIRCUITS by Nagaraj Vannal, Asst.Professor, School of Electronics Engineering, K.L.E. Technological University,
Unit 9 Latches and Flip-Flops. Dept. of Electrical and Computer Eng., NCTU 1
Unit 9 Latches and Flip-Flops Dept. of Electrical and Computer Eng., NCTU 1 9.1 Introduction Dept. of Electrical and Computer Eng., NCTU 2 What is the characteristic of sequential circuits in contrast
CHAPTER 4: Logic Circuits
CHAPTER 4: Logic Circuits II. Sequential Circuits Combinational circuits o The outputs depend only on the current input values o It uses only logic gates, decoders, multiplexers, ALUs Sequential circuits
CHAPTER 6 COUNTERS & REGISTERS
CHAPTER 6 COUNTERS & REGISTERS 6.1 Asynchronous Counter 6.2 Synchronous Counter 6.3 State Machine 6.4 Basic Shift Register 6.5 Serial In/Serial Out Shift Register 6.6 Serial In/Parallel Out Shift Register
Digital Circuits ECS 371
igital Circuits ECS 371 r. Prapun Suksompong prapun@siit.tu.ac.th Lecture 17 Office Hours: BK 3601-7 Monday 9:00-10:30, 1:30-3:30 Tuesday 10:30-11:30 1 Announcement Reading Assignment: Chapter 7: 7-1,
Switching Theory And Logic Design UNIT-IV SEQUENTIAL LOGIC CIRCUITS
Switching Theory And Logic Design UNIT-IV SEQUENTIAL LOGIC CIRCUITS Sequential circuits Classification of sequential circuits: Sequential circuits may be classified as two types. 1. Synchronous sequential
Chapter 8 Sequential Circuits
Philadelphia University Faculty of Information Technology Department of Computer Science Computer Logic Design By 1 Chapter 8 Sequential Circuits 1 Classification of Combinational Logic 3 Sequential circuits
2. Counter Stages or Bits output bits least significant bit (LSB) most significant bit (MSB) 3. Frequency Division 4. Asynchronous Counters
2. Counter Stages or Bits The number of output bits of a counter is equal to the flip-flop stages of the counter. A MOD-2 n counter requires n stages or flip-flops in order to produce a count sequence
CHAPTER 1 LATCHES & FLIP-FLOPS
CHAPTER 1 LATCHES & FLIP-FLOPS 1 Outcome After learning this chapter, student should be able to; Recognize the difference between latches and flipflops Analyze the operation of the flip flop Draw the output
CSE Latches and Flip-flops Dr. Izadi. NOR gate property: A B Z Cross coupled NOR gates: S M S R Q M
CSE-4523 Latches and Flip-flops Dr. Izadi NOR gate property: A B Z A B Z Cross coupled NOR gates: S M S R M R S M R S R S R M S S M R R S ' Gate R Gate S R S G R S R (t+) S G R Flip_flops:. S-R flip-flop
Review of digital electronics. Storage units Sequential circuits Counters Shifters
Review of digital electronics Storage units Sequential circuits ounters Shifters ounting in Binary A counter can form the same pattern of 0 s and 1 s with logic levels. The first stage in the counter represents
MODU LE DAY. Class-A, B, AB and C amplifiers - basic concepts, power, efficiency Basic concepts of Feedback and Oscillation. Day 1
DAY MODU LE TOPIC QUESTIONS Day 1 Day 2 Day 3 Day 4 I Class-A, B, AB and C amplifiers - basic concepts, power, efficiency Basic concepts of Feedback and Oscillation Phase Shift Wein Bridge oscillators.
EEE2135 Digital Logic Design Chapter 6. Latches/Flip-Flops and Registers/Counters 서강대학교 전자공학과
EEE235 Digital Logic Design Chapter 6. Latches/Flip-Flops and Registers/Counters 서강대학교 전자공학과 . Delay and Latches ) Signal Storage a. as voltage level static memory b. as charges dynamic memory 2) Delays
Chapter. Synchronous Sequential Circuits
Chapter 5 Synchronous Sequential Circuits Logic Circuits- Review Logic Circuits 2 Combinational Circuits Consists of logic gates whose outputs are determined from the current combination of inputs. Performs
Decade Counters Mod-5 counter: Decade Counter:
Decade Counters We can design a decade counter using cascade of mod-5 and mod-2 counters. Mod-2 counter is just a single flip-flop with the two stable states as 0 and 1. Mod-5 counter: A typical mod-5
Chapter 5: Synchronous Sequential Logic
Chapter 5: Synchronous Sequential Logic NCNU_2016_DD_5_1 Digital systems may contain memory for storing information. Combinational circuits contains no memory elements the outputs depends only on the inputs
LAB #4 SEQUENTIAL LOGIC CIRCUIT
LAB #4 SEQUENTIAL LOGIC CIRCUIT OBJECTIVES 1. To learn how basic sequential logic circuit works 2. To test and investigate the operation of various latch and flip flop circuits INTRODUCTIONS Sequential
3 Flip-Flops. The latch is a logic block that has 2 stable states (0) or (1). The RS latch can be forced to hold a 1 when the Set line is asserted.
3 Flip-Flops Flip-flops and latches are digital memory circuits that can remain in the state in which they were set even after the input signals have been removed. This means that the circuits have a memory
R13 SET - 1 '' ''' '' ' '''' Code No: RT21053
SET - 1 1. a) What are the characteristics of 2 s complement numbers? b) State the purpose of reducing the switching functions to minimal form. c) Define half adder. d) What are the basic operations in
Experiment # 9. Clock generator circuits & Counters. Digital Design LAB
Digital Design LAB Islamic University Gaza Engineering Faculty Department of Computer Engineering Fall 2012 ECOM 2112: Digital Design LAB Eng: Ahmed M. Ayash Experiment # 9 Clock generator circuits & Counters
Logic and Computer Design Fundamentals. Chapter 7. Registers and Counters
Logic and Computer Design Fundamentals Chapter 7 Registers and Counters Registers Register a collection of binary storage elements In theory, a register is sequential logic which can be defined by a state
EKT 121/4 ELEKTRONIK DIGIT 1
EKT 121/4 ELEKTRONIK DIGIT 1 Kolej Universiti Kejuruteraan Utara Malaysia Bistable Storage Devices and Related Devices Introduction Latches and flip-flops are the basic single-bit memory elements used
CPS311 Lecture: Sequential Circuits
CPS311 Lecture: Sequential Circuits Last revised August 4, 2015 Objectives: 1. To introduce asynchronous and synchronous flip-flops (latches and pulsetriggered, plus asynchronous preset/clear) 2. To introduce
Synchronous Sequential Logic
Synchronous Sequential Logic -A Sequential Circuit consists of a combinational circuit to which storage elements are connected to form a feedback path. The storage elements are devices capable of storing
Digital Logic Design I
Digital Logic Design I Synchronous Sequential Logic Mustafa Kemal Uyguroğlu Sequential Circuits Asynchronous Inputs Combinational Circuit Memory Elements Outputs Synchronous Inputs Combinational Circuit
DIGITAL SYSTEM FUNDAMENTALS (ECE421) DIGITAL ELECTRONICS FUNDAMENTAL (ECE422) LATCHES and FLIP-FLOPS
COURSE / CODE DIGITAL SYSTEM FUNDAMENTALS (ECE421) DIGITAL ELECTRONICS FUNDAMENTAL (ECE422) LATCHES and FLIP-FLOPS In the same way that logic gates are the building blocks of combinatorial circuits, latches
Sequential Logic Circuits
Sequential Logic Circuits By Dr. M. Hebaishy Digital Logic Design Ch- Rem.!) Types of Logic Circuits Combinational Logic Memoryless Outputs determined by current values of inputs Sequential Logic Has memory
Introduction to Microprocessor & Digital Logic
ME262 Introduction to Microprocessor & Digital Logic (Sequential Logic) Summer 2 Sequential Logic Definition The output(s) of a sequential circuit depends d on the current and past states of the inputs,
ELCT201: DIGITAL LOGIC DESIGN
ELCT201: DIGITAL LOGIC DESIGN Dr. Eng. Haitham Omran, haitham.omran@guc.edu.eg Dr. Eng. Wassim Alexan, wassim.joseph@guc.edu.eg Lecture 7 Following the slides of Dr. Ahmed H. Madian محرم 1439 ه Winter
Registers and Counters
Registers and Counters Clocked sequential circuit = F/Fs and combinational gates Register Group of flip-flops (share a common clock and capable of storing one bit of information) Consist of a group of
Digital Fundamentals: A Systems Approach
Digital Fundamentals: A Systems Approach Latches, Flip-Flops, and Timers Chapter 6 Traffic Signal Control Traffic Signal Control: State Diagram Traffic Signal Control: Block Diagram Traffic Signal Control:
Registers and Counters
Registers and Counters Clocked sequential circuit = F/Fs and combinational gates Register Group of flip-flops (share a common clock and capable of storing one bit of information) Consist of a group of
Digital Systems Laboratory 3 Counters & Registers Time 4 hours
Digital Systems Laboratory 3 Counters & Registers Time 4 hours Aim: To investigate the counters and registers constructed from flip-flops. Introduction: In the previous module, you have learnt D, S-R,
DIGITAL SYSTEM FUNDAMENTALS (ECE421) DIGITAL ELECTRONICS FUNDAMENTAL (ECE422) COUNTERS
COURSE / CODE DIGITAL SYSTEM FUNDAMENTALS (ECE421) DIGITAL ELECTRONICS FUNDAMENTAL (ECE422) COUNTERS One common requirement in digital circuits is counting, both forward and backward. Digital clocks and
NH 67, Karur Trichy Highways, Puliyur C.F, Karur District DEPARTMENT OF INFORMATION TECHNOLOGY CS 2202 DIGITAL PRINCIPLES AND SYSTEM DESIGN
NH 67, Karur Trichy Highways, Puliyur C.F, 639 114 Karur District DEPARTMENT OF INFORMATION TECHNOLOGY CS 2202 DIGITAL PRINCIPLES AND SYSTEM DESIGN UNIT 4 SYNCHRONOUS SEQUENTIAL LOGIC Sequential circuits
R13. II B. Tech I Semester Regular Examinations, Jan DIGITAL LOGIC DESIGN (Com. to CSE, IT) PART-A
SET - 1 Note: Question Paper consists of two parts (Part-A and Part-B) Answer ALL the question in Part-A Answer any THREE Questions from Part-B a) What are the characteristics of 2 s complement numbers?
Sequential Digital Design. Laboratory Manual. Experiment #3. Flip Flop Storage Elements
The Islamic University of Gaza Engineering Faculty Department of Computer Engineering Spring 2018 ECOM 2022 Khaleel I. Shaheen Sequential Digital Design Laboratory Manual Experiment #3 Flip Flop Storage
Engr354: Digital Logic Circuits
Engr354: igital Circuits Chapter 7 Sequential Elements r. Curtis Nelson Sequential Elements In this chapter you will learn about: circuits that can store information; Basic cells, latches, and flip-flops;
WINTER 15 EXAMINATION Model Answer
Important Instructions to examiners: 1) The answers should be examined by key words and not as word-to-word as given in the model answer scheme. 2) The model answer and the answer written by candidate
INC 253 Digital and electronics laboratory I
INC 253 Digital and electronics laboratory I Laboratory 9 Sequential Circuit Author: ID Co-Authors: 1. ID 2. ID 3. ID Experiment Date: Report received Date: Comments For Instructor Full Marks Pre lab 10
ECE 263 Digital Systems, Fall 2015
ECE 263 Digital Systems, Fall 2015 REVIEW: FINALS MEMORY ROM, PROM, EPROM, EEPROM, FLASH RAM, DRAM, SRAM Design of a memory cell 1. Draw circuits and write 2 differences and 2 similarities between DRAM
ELE2120 Digital Circuits and Systems. Tutorial Note 7
ELE2120 Digital Circuits and Systems Tutorial Note 7 Outline 1. Sequential Circuit 2. Gated SR Latch 3. Gated D-latch 4. Edge-Triggered D Flip-Flop 5. Asynchronous and Synchronous reset Sequential Circuit
Slide 1. Flip-Flops. Cross-NOR SR flip-flop S R Q Q. hold reset set not used. Cross-NAND SR flip-flop S R Q Q. not used reset set hold 1 Q.
Slide Flip-Flops Cross-NOR SR flip-flop Reset Set Cross-NAND SR flip-flop Reset Set S R reset set not used S R not used reset set 6.7 Digital ogic Slide 2 Clocked evel-triggered NAND SR Flip-Flop S R SR
Introduction to Sequential Circuits
Introduction to Sequential Circuits COE 202 Digital Logic Design Dr. Muhamed Mudawar King Fahd University of Petroleum and Minerals Presentation Outline Introduction to Sequential Circuits Synchronous
Flip-Flops and Sequential Circuit Design
Flip-Flops and Sequential Circuit Design ECE 52 Summer 29 Reading ssignment Brown and Vranesic 7 Flip-Flops, Registers, Counters and a Simple Processor 7.5 T Flip-Flop 7.5. Configurable Flip-Flops 7.6
BISHOP ANSTEY HIGH SCHOOL & TRINITY COLLEGE EAST SIXTH FORM CXC CAPE PHYSICS, UNIT 2 Ms. S. S. CALBIO NOTES lesson #39
BISHOP ANSTEY HIGH SCHOOL & TRINITY COLLEGE EAST SIXTH FORM CXC CAPE PHYSICS, UNIT 2 Ms. S. S. CALBIO NOTES lesson #39 Objectives: Students should be able to Thursday 21 st January 2016 @ 10:45 am Module
Sequential Logic Counters and Registers
Sequential Logic ounters and Registers ounters Introduction: ounters Asynchronous (Ripple) ounters Asynchronous ounters with MOD number < 2 n Asynchronous Down ounters ascading Asynchronous ounters svbitec.wordpress.com
Sequential Logic Basics
Sequential Logic Basics Unlike Combinational Logic circuits that change state depending upon the actual signals being applied to their inputs at that time, Sequential Logic circuits have some form of inherent
CHAPTER1: Digital Logic Circuits
CS224: Computer Organization S.KHABET CHAPTER1: Digital Logic Circuits 1 Sequential Circuits Introduction Composed of a combinational circuit to which the memory elements are connected to form a feedback
(Refer Slide Time: 2:00)
Digital Circuits and Systems Prof. Dr. S. Srinivasan Department of Electrical Engineering Indian Institute of Technology, Madras Lecture #21 Shift Registers (Refer Slide Time: 2:00) We were discussing
MODEL QUESTIONS WITH ANSWERS THIRD SEMESTER B.TECH DEGREE EXAMINATION DECEMBER CS 203: Switching Theory and Logic Design. Time: 3 Hrs Marks: 100
MODEL QUESTIONS WITH ANSWERS THIRD SEMESTER B.TECH DEGREE EXAMINATION DECEMBER 2016 CS 203: Switching Theory and Logic Design Time: 3 Hrs Marks: 100 PART A ( Answer All Questions Each carries 3 Marks )