Asynchronous Counters. Asynchronous Counters


 Florence Shanon Black
 3 years ago
 Views:
Transcription
1 Counters and State Machine Design November 25 Asynchronous Counters ENGI 25 ELEC 24 Asynchronous Counters The term Asynchronous refers to events that do not occur at the same time With respect to counter operation, asynchronous means that the FlipFlops within the counter are not connected in a way to cause all FlipFlops states at exactly the same time they are wired in a way that links the clock of the next flipflop to the Q of the current device this causes the output count states to ripple through the counter November 25 ENGI 25/ELEC 24 Counter Design 2 ENGI 25/ELEC 24
2 Counters and State Machine Design November 25 2Bit (MOD 4) Asynchronous Counter November 25 ENGI 25/ELEC 24 Counter Design 3 November 25 ENGI 25/ELEC 24 Counter Design 4 ENGI 25/ELEC 24 2
3 Counters and State Machine Design November 25 3Bit (MOD 8) Asynchronous Counter November 25 ENGI 25/ELEC 24 Counter Design 5 November 25 ENGI 25/ELEC 24 Counter Design 6 ENGI 25/ELEC 24 3
4 Counters and State Machine Design November 25 ENGI 25/ELEC 24 4 November 25 ENGI 25/ELEC 24 Counter Design 7 Propagation Delay in Ripple Clocked Binary Counters November 25 ENGI 25/ELEC 24 Counter Design 8 4Bit Counter State Table CLK QD QC QB QA
5 Counters and State Machine Design November 25 ENGI 25/ELEC 24 5 November 25 ENGI 25/ELEC 24 Counter Design 9 4Bit Asynchronous Counter November 25 ENGI 25/ELEC 24 Counter Design MOD Counter State Table CLK QD QC QB QA
6 Counters and State Machine Design November 25 Asynchronous Decade (MOD ) Counter November 25 ENGI 25/ELEC 24 Counter Design MOD 2 Asynchronous Counter November 25 ENGI 25/ELEC 24 Counter Design 2 ENGI 25/ELEC 24 6
7 Counters and State Machine Design November 25 November 25 ENGI 25/ELEC 24 Counter Design A MOD 6 Counter November 25 ENGI 25/ELEC 24 Counter Design 4 ENGI 25/ELEC 24 7
8 Counters and State Machine Design November 25 Synchronous Counters ENGI 25 ELEC 24 Synchronous Counters The term synchronous refers to events that do occur simultaneously In communications, both ends must be connected telephone call with respect to counter operation, synchronous means that the counter is connected such that all the Flip Flops change at the same time they are wired in a way that links all the flipflop clock inputs together this causes the output count states to change at the same time There is a propagation delay, but they are typically very close in similar devices November 25 ENGI 25/ELEC 24 Counter Design 6 ENGI 25/ELEC 24 8
9 Counters and State Machine Design November 25 MOD 4 Synchronous Counter November 25 ENGI 25/ELEC 24 Counter Design 7 MOD 4 Counter Timing Diagram November 25 ENGI 25/ELEC 24 Counter Design 8 ENGI 25/ELEC 24 9
10 Counters and State Machine Design November 25 MOD 8 Synchronous Counter November 25 ENGI 25/ELEC 24 Counter Design 9 MOD Synchronous Counter November 25 ENGI 25/ELEC 24 Counter Design 2 ENGI 25/ELEC 24
11 Counters and State Machine Design November 25 MOD Timing Diagram November 25 ENGI 25/ELEC 24 Counter Design 2 Johnson Counter State Diagram November 25 ENGI 25/ELEC 24 Counter Design 22 ENGI 25/ELEC 24
12 Counters and State Machine Design November 25 Johnson Counter A Johnson counter is a special counter where the output of the last stage is inverted and fed back as input to the first stage. A pattern of bits equal in length circulates indefinitely. These counters are sometimes called "walking ring" counters, and find special applications. November 25 ENGI 25/ELEC 24 Counter Design 23 74LS63A 4bit Binary Counter The counter can be synchronously preset to any fourbit binary number by When a LOW is applied to the LOAD input, the counter will assume the state of the data inputs on the next clock pulse The activelow CLR input synchronously RESETS all four flip flops in the counter November 25 ENGI 25/ELEC 24 Counter Design 24 ENGI 25/ELEC 24 2
13 Counters and State Machine Design November 25 74LS63A Timing Diagram November 25 ENGI 25/ELEC 24 Counter Design 25 74LS6A November 25 ENGI 25/ELEC 24 Counter Design 26 ENGI 25/ELEC 24 3
14 Counters and State Machine Design November 25 November 25 ENGI 25/ELEC 24 Counter Design 27 November 25 ENGI 25/ELEC 24 Counter Design 28 ENGI 25/ELEC 24 4
15 Counters and State Machine Design November 25 November 25 ENGI 25/ELEC 24 Counter Design 29 State Machine Design ENGI 25/ELEC 24 5
16 Counters and State Machine Design November 25 State Machine Design The Figure above is the general diagram of a State Machine There are two basic components in a state machine, Memory which are usually JK FlipFlops, and Combinational Logic To design a state machine, JK flipflops are usually connected as a counter The following will demonstrate the design the logic necessary to allow the counter to sequence any desired binary pattern November 25 ENGI 25/ELEC 24 Counter Design 3 Gray Code State Diagram The figure on the left shows the progression of states and the input and outputs for a Gray Code Counter The arrow in the center shows the direction of the counter If we start at, the next state is From the next state is We progress through all possible states until the sequence repeats We use the State Diagram to create the Next State Table November 25 ENGI 25/ELEC 24 Counter Design 32 ENGI 25/ELEC 24 6
17 Counters and State Machine Design November 25 Gray Code Next State Table November 25 ENGI 25/ELEC 24 Counter Design 33 Gray Code Transition Table X = Don t Care (may be or ) November 25 ENGI 25/ELEC 24 Counter Design 34 ENGI 25/ELEC 24 7
18 Counters and State Machine Design November 25 KMAP for Gray Code Transistion November 25 ENGI 25/ELEC 24 Counter Design 35 BCD Counter Design November 25 ENGI 25/ELEC 24 Counter Design 36 ENGI 25/ELEC 24 8
19 Counters and State Machine Design November 25 BCD Counter Design November 25 ENGI 25/ELEC 24 Counter Design 37 ENGI 25/ELEC 24 9
Module 3: Floyd, Digital Fundamental
Module 3: Lecturer : Yongsheng Gao Room : Tech  3.25 Email : yongsheng.gao@griffith.edu.au Structure : 6 lectures 1 Tutorial Assessment: 1 Laboratory (5%) 1 Test (20%) Textbook : Floyd, Digital Fundamental
More informationDIGITAL ELECTRONICS. Counters. By: Electrical Engineering Department
Counters By: Electrical Engineering Department 1 Counters Upon completion of the chapter, students should be able to:.1 Understand the basic concepts of asynchronous counter and synchronous counters, and
More informationExperiment # 9. Clock generator circuits & Counters. Eng. Waleed Y. Mousa
Experiment # 9 Clock generator circuits & Counters Eng. Waleed Y. Mousa 1. Objectives: 1. Understanding the principles and construction of Clock generator. 2. To be familiar with clock pulse generation
More informationDigital Logic Design Sequential circuits
Digital Logic Design Sequential circuits Dr. Eng. Ahmed H. Madian Email: ahmed.madian@guc.edu.eg Dr. Eng. Rania.Swief Email: rania.swief@guc.edu.eg Dr. Eng. Ahmed H. Madian Registers An nbit register
More informationCounters & Shift Registers Chapter 8 of R.P Jain
Chapter 3 Counters & Shift Registers Chapter 8 of R.P Jain Counters & Shift Registers Counters, Syllabus Design of ModuloN ripple counter, UpDown counter, design of synchronous counters with and without
More informationTo design digital counter circuits using JKFlipFlop. To implement counter using 74LS193 IC.
8.1 Objectives To design digital counter circuits using JKFlipFlop. To implement counter using 74LS193 IC. 8.2 Introduction Circuits for counting events are frequently used in computers and other digital
More informationETEC 2301 Programmable Logic Devices. Chapter 10 Counters. Shawnee State University Department of Industrial and Engineering Technologies
ETEC 2301 Programmable Logic Devices Chapter 10 Counters Shawnee State University Department of Industrial and Engineering Technologies Copyright 2007 by Janna B. Gallaher Asynchronous Counter Operation
More informationChapter 8. Sequential Circuits for Registers and Counters
Chapter 8 Sequential Circuits for Registers and Counters Lesson 3 COUNTERS Ch16L3 "Digital Principles and Design", Raj Kamal, Pearson Education, 2006 2 Outline Counters TFF Basic Counting element State
More informationCounters and Decoders
Physics 3330 Experiment #10 Fall 1999 Purpose Counters and Decoders In this experiment, you will design and construct a 4bit ripplethrough decade counter with a decimal readout display. Such a counter
More informationLesson 12 Sequential Circuits: FlipFlops
Lesson 12 Sequential Circuits: FlipFlops 1. Overview of a Synchronous Sequential Circuit We saw from last lesson that the level sensitive latches could cause instability in a sequential system. This instability
More informationDigital Systems Based on Principles and Applications of Electrical Engineering/Rizzoni (McGraw Hill
Digital Systems Based on Principles and Applications of Electrical Engineering/Rizzoni (McGraw Hill Objectives: Analyze the operation of sequential logic circuits. Understand the operation of digital counters.
More informationContents COUNTER. Unit III Counters
COUNTER Contents COUNTER...1 Frequency Division...2 Divideby2 Counter... 3 Toggle FlipFlop...3 Frequency Division using Toggle Flipflops...5 Truth Table for a 3bit Asynchronous Up Counter...6 Modulo
More informationLecture 8: Synchronous Digital Systems
Lecture 8: Synchronous Digital Systems The distinguishing feature of a synchronous digital system is that the circuit only changes in response to a system clock. For example, consider the edge triggered
More informationCascaded Counters. Page 1 BYU
Cascaded Counters Page 1 ModN Counters Generally we are interested in counters that count up to specific count values Not just powers of 2 A modn counter has N states Counts from 0 to N1 then rolls
More informationFlipFlops and Sequential Circuit Design. ECE 152A Winter 2012
FlipFlops and Sequential Circuit Design ECE 52 Winter 22 Reading ssignment Brown and Vranesic 7 FlipFlops, Registers, Counters and a Simple Processor 7.5 T FlipFlop 7.5. Configurable FlipFlops 7.6
More informationFlipFlops and Sequential Circuit Design
FlipFlops and Sequential Circuit Design ECE 52 Winter 22 Reading ssignment Brown and Vranesic 7 FlipFlops, Registers, Counters and a Simple Processor 7.5 T FlipFlop 7.5. Configurable FlipFlops 7.6
More informationASYNCHRONOUS COUNTERS
LB no.. SYNCHONOUS COUNTES. Introduction Counters are sequential logic circuits that counts the pulses applied at their clock input. They usually have 4 bits, delivering at the outputs the corresponding
More informationDigital Fundamentals
Digital Fundamentals Tenth Edition Floyd hapter 8 2009 Pearson Education, Upper 2008 Pearson Saddle River, Education NJ 07458. All Rights Reserved ounting in Binary As you know, the binary count sequence
More informationCombinational Logic Design Process
Combinational Logic Design Process Create truth table from specification Generate Kmaps & obtain logic equations Draw logic diagram (sharing common gates) Simulate circuit for design verification Debug
More informationDIGITAL COUNTERS. Q B Q A = 00 initially. Q B Q A = 01 after the first clock pulse.
DIGITAL COUNTERS http://www.tutorialspoint.com/computer_logical_organization/digital_counters.htm Copyright tutorialspoint.com Counter is a sequential circuit. A digital circuit which is used for a counting
More informationLecture3 MEMORY: Development of Memory:
Lecture3 MEMORY: It is a storage device. It stores program data and the results. There are two kind of memories; semiconductor memories & magnetic memories. Semiconductor memories are faster, smaller,
More informationCounters are sequential circuits which "count" through a specific state sequence.
Counters Counters are sequential circuits which "count" through a specific state sequence. They can count up, count down, or count through other fixed sequences. Two distinct types are in common usage:
More informationWEEK 8.1 Registers and Counters. ECE124 Digital Circuits and Systems Page 1
WEEK 8.1 egisters and Counters ECE124 igital Circuits and Systems Page 1 Additional schematic FF symbols Active low set and reset signals. S Active high set and reset signals. S ECE124 igital Circuits
More informationLab 1: Study of Gates & Flipflops
1.1 Aim Lab 1: Study of Gates & Flipflops To familiarize with circuit implementations using ICs and test the behavior of different logic gates and Flipflops. 1.2 Hardware Requirement a. Equipments 
More informationDesign Example: Counters. Design Example: Counters. 3Bit Binary Counter. 3Bit Binary Counter. Other useful counters:
Design Eample: ers er: a sequential circuit that repeats a specified sequence of output upon clock pulses. A,B,C,, Z. G, O, T, E, R, P, S,!.,,,,,,,7. 7,,,,,,,.,,,,,,,,,,,. Binary counter: follows the binary
More informationDIGITAL TECHNICS II. Dr. Bálint Pődör. Óbuda University, Microelectronics and Technology Institute. 2nd (Spring) term 2012/2013
DIGITAL TECHNICS II Dr. Bálint Pődör Óbuda University, Microelectronics and Technology Institute 4. LECTURE: COUNTERS AND RELATED 2nd (Spring) term 2012/2013 1 4. LECTURE: COUNTERS AND RELATED 1. Counters,
More informationFig11 2bit asynchronous counter
Digital electronics 1Sequential circuit counters Such a group of flip flops is a counter. The number of flipflops used and the way in which they are connected determine the number of states and also
More informationChapter 7. Registers & Register Transfers. J.J. Shann. J. J. Shann
Chapter 7 Registers & Register Transfers J. J. Shann J.J. Shann Chapter Overview 7 Registers and Load Enable 72 Register Transfers 73 Register Transfer Operations 74 A Note for VHDL and Verilog Users
More informationCopyright Peter R. Rony 2009. All rights reserved.
Experiment No. 1. THE DIGI DESIGNER Experiment 11. Socket Connections on the Digi Designer Experiment No. 2. LOGIC LEVELS AND THE 7400 QUADRUPLE 2INPUT POSITIVE NAND GATE Experiment 21. Truth Table
More informationENEE 244 (01**). Spring 2006. Homework 5. Due back in class on Friday, April 28.
ENEE 244 (01**). Spring 2006 Homework 5 Due back in class on Friday, April 28. 1. Fill up the function table (truth table) for the following latch. How is this latch related to those described in the lectures
More informationCHAPTER IX REGISTER BLOCKS COUNTERS, SHIFT, AND ROTATE REGISTERS
CHAPTER IX1 CHAPTER IX CHAPTER IX COUNTERS, SHIFT, AN ROTATE REGISTERS REA PAGES 249275 FROM MANO AN KIME CHAPTER IX2 INTROUCTION INTROUCTION Like combinational building blocks, we can also develop
More informationMemory Elements. Combinational logic cannot remember
Memory Elements Combinational logic cannot remember Output logic values are function of inputs only Feedback is needed to be able to remember a logic value Memory elements are needed in most digital logic
More informationNapier University. School of Engineering. Electronic Engineering A Module: SE42205 Digital Design
Napier University School of Engineering Digital Design Clock + U1 out 5V "1" "2" "4" JKFF D JKFF C JKFF B U8 SN7408 signal U4 SN74107 U5 SN74107 U6 SN74107 U3 SN7408 U2 J Q J Q & J Q & K CQ K CQ K CQ
More informationAsynchronous counters, except for the first block, work independently from a system clock.
Counters Some digital circuits are designed for the purpose of counting and this is when counters become useful. Counters are made with flipflops, they can be asynchronous or synchronous and they can
More informationLatches, the D FlipFlop & Counter Design. ECE 152A Winter 2012
Latches, the D FlipFlop & Counter Design ECE 52A Winter 22 Reading Assignment Brown and Vranesic 7 FlipFlops, Registers, Counters and a Simple Processor 7. Basic Latch 7.2 Gated SR Latch 7.2. Gated SR
More informationBINARY CODED DECIMAL: B.C.D.
BINARY CODED DECIMAL: B.C.D. ANOTHER METHOD TO REPRESENT DECIMAL NUMBERS USEFUL BECAUSE MANY DIGITAL DEVICES PROCESS + DISPLAY NUMBERS IN TENS IN BCD EACH NUMBER IS DEFINED BY A BINARY CODE OF 4 BITS.
More informationWiki Lab Book. This week is practice for wiki usage during the project.
Wiki Lab Book Use a wiki as a lab book. Wikis are excellent tools for collaborative work (i.e. where you need to efficiently share lots of information and files with multiple people). This week is practice
More informationDIGITAL TECHNICS II. Dr. Bálint Pődör. Óbuda University, Microelectronics and Technology Institute 5. LECTURE: REGISTERS AND RELATED
DIGITAL TECHNICS II Dr. Bálint Pődör Óbuda University, Microelectronics and Technology Institute 5. LECTURE: REGISTERS AND RELATED 2nd (Spring) term 22/23 5. LECTURE: REGISTERS. Storage registers 2. Shift
More informationCHAPTER 11: Flip Flops
CHAPTER 11: Flip Flops In this chapter, you will be building the part of the circuit that controls the command sequencing. The required circuit must operate the counter and the memory chip. When the teach
More informationDigital Logic Design. Basics Combinational Circuits Sequential Circuits. PuJen Cheng
Digital Logic Design Basics Combinational Circuits Sequential Circuits PuJen Cheng Adapted from the slides prepared by S. Dandamudi for the book, Fundamentals of Computer Organization and Design. Introduction
More informationDEPARTMENT OF INFORMATION TECHNLOGY
DRONACHARYA GROUP OF INSTITUTIONS, GREATER NOIDA Affiliated to Mahamaya Technical University, Noida Approved by AICTE DEPARTMENT OF INFORMATION TECHNLOGY Lab Manual for Computer Organization Lab ECS453
More informationList of Experiment. 8. To study and verify the BCD to Seven Segments DECODER.(IC7447).
G. H. RAISONI COLLEGE OF ENGINEERING, NAGPUR Department of Electronics & Communication Engineering Branch:4 th Semester[Electronics] Subject:  Digital Circuits List of Experiment Sr. Name Of Experiment
More informationDigital Controller for Pedestrian Crossing and Traffic Lights
Project Objective:  To design and simulate, a digital controller for traffic and pedestrian lights at a pedestrian crossing using Microsim Pspice The controller must be based on nextstate techniques
More informationCounters. Present State Next State A B A B 0 0 0 1 0 1 1 0 1 0 1 1 1 1 0 0
ounter ounters ounters are a specific type of sequential circuit. Like registers, the state, or the flipflop values themselves, serves as the output. The output value increases by one on each clock cycle.
More informationChapter 9 Latches, FlipFlops, and Timers
ETEC 23 Programmable Logic Devices Chapter 9 Latches, FlipFlops, and Timers Shawnee State University Department of Industrial and Engineering Technologies Copyright 27 by Janna B. Gallaher Latches A temporary
More informationDigital Fundamentals
igital Fundamentals with PL Programming Floyd Chapter 9 Floyd, igital Fundamentals, 10 th ed, Upper Saddle River, NJ 07458. All Rights Reserved Summary Latches (biestables) A latch is a temporary storage
More informationEE 42/100 Lecture 24: Latches and Flip Flops. Rev B 4/21/2010 (2:04 PM) Prof. Ali M. Niknejad
A. M. Niknejad University of California, Berkeley EE 100 / 42 Lecture 24 p. 1/20 EE 42/100 Lecture 24: Latches and Flip Flops ELECTRONICS Rev B 4/21/2010 (2:04 PM) Prof. Ali M. Niknejad University of California,
More informationSequential Logic Design Principles.Latches and FlipFlops
Sequential Logic Design Principles.Latches and FlipFlops Doru Todinca Department of Computers Politehnica University of Timisoara Outline Introduction Bistable Elements Latches and FlipFlops SR Latch
More informationRegisters & Counters
Objectives This section deals with some simple and useful sequential circuits. Its objectives are to: Introduce registers as multibit storage devices. Introduce counters by adding logic to registers implementing
More information1.1 The 7493 consists of 4 flipflops with JK inputs unconnected. In a TTL chip, unconnected inputs
CALIFORNIA STATE UNIVERSITY LOS ANGELES Department of Electrical and Computer Engineering EE246 Digital Logic Lab EXPERIMENT 1 COUNTERS AND WAVEFORMS Text: Mano, Digital Design, 3rd & 4th Editions, Sec.
More informationChapter 5. Sequential Logic
Chapter 5 Sequential Logic Sequential Circuits (/2) Combinational circuits: a. contain no memory elements b. the outputs depends on the current inputs Sequential circuits: a feedback path outputs depends
More informationTakeHome Exercise. z y x. Erik Jonsson School of Engineering and Computer Science. The University of Texas at Dallas
TakeHome Exercise Assume you want the counter below to count mod6 backward. That is, it would count 0543210, etc. Assume it is reset on startup, and design the wiring to make the counter count
More informationFlipFlops, Registers, Counters, and a Simple Processor
June 8, 22 5:56 vra235_ch7 Sheet number Page number 349 black chapter 7 FlipFlops, Registers, Counters, and a Simple Processor 7. Ng f3, h7 h6 349 June 8, 22 5:56 vra235_ch7 Sheet number 2 Page number
More informationDM74LS169A Synchronous 4Bit Up/Down Binary Counter
Synchronous 4Bit Up/Down Binary Counter General Description This synchronous presettable counter features an internal carry lookahead for cascading in highspeed counting applications. Synchronous operation
More informationUpon completion of unit 1.1, students will be able to
Upon completion of unit 1.1, students will be able to 1. Demonstrate safety of the individual, class, and overall environment of the classroom/laboratory, and understand that electricity, even at the nominal
More informationSystems I: Computer Organization and Architecture
Systems I: omputer Organization and Architecture Lecture 8: Registers and ounters Registers A register is a group of flipflops. Each flipflop stores one bit of data; n flipflops are required to store
More informationCDA 3200 Digital Systems. Instructor: Dr. Janusz Zalewski Developed by: Dr. Dahai Guo Spring 2012
CDA 3200 Digital Systems Instructor: Dr. Janusz Zalewski Developed by: Dr. Dahai Guo Spring 2012 Outline SR Latch D Latch EdgeTriggered D FlipFlop (FF) SR FlipFlop (FF) JK FlipFlop (FF) T FlipFlop
More information18008314242
Distributed by: www.jameco.com 18008314242 The content and copyrights of the attached material are the property of its owner. DM74LS161A DM74LS163A Synchronous 4Bit Binary Counters General Description
More information74LS193 Synchronous 4Bit Binary Counter with Dual Clock
74LS193 Synchronous 4Bit Binary Counter with Dual Clock General Description The DM74LS193 circuit is a synchronous up/down 4bit binary counter. Synchronous operation is provided by having all flipflops
More informationDM54161 DM74161 DM74163 Synchronous 4Bit Counters
DM54161 DM74161 DM74163 Synchronous 4Bit Counters General Description These synchronous presettable counters feature an internal carry lookahead for application in highspeed counting designs The 161
More informationSequential Logic: Clocks, Registers, etc.
ENEE 245: igital Circuits & Systems Lab Lab 2 : Clocks, Registers, etc. ENEE 245: igital Circuits and Systems Laboratory Lab 2 Objectives The objectives of this laboratory are the following: To design
More informationThe components. E3: Digital electronics. Goals:
E3: Digital electronics Goals: Basic understanding of logic circuits. Become familiar with the most common digital components and their use. Equipment: 1 st. LED bridge 1 st. 7segment display. 2 st. IC
More informationModeling Sequential Elements with Verilog. Prof. ChienNan Liu TEL: 034227151 ext:34534 Email: jimmy@ee.ncu.edu.tw. Sequential Circuit
Modeling Sequential Elements with Verilog Prof. ChienNan Liu TEL: 034227151 ext:34534 Email: jimmy@ee.ncu.edu.tw 41 Sequential Circuit Outputs are functions of inputs and present states of storage elements
More information54LS169 DM54LS169A DM74LS169A Synchronous 4Bit Up Down Binary Counter
54LS169 DM54LS169A DM74LS169A Synchronous 4Bit Up Down Binary Counter General Description This synchronous presettable counter features an internal carry lookahead for cascading in highspeed counting
More informationOperating Manual Ver.1.1
4 Bit Binary Ripple Counter (UpDown Counter) Operating Manual Ver.1.1 An ISO 9001 : 2000 company 94101, Electronic Complex Pardesipura, Indore 452010, India Tel : 91731 2570301/02, 4211100 Fax: 91731
More information54191 DM54191 DM74191 Synchronous Up Down 4Bit Binary Counter with Mode Control
54191 DM54191 DM74191 Synchronous Up Down 4Bit Binary Counter with Mode Control General Description This circuit is a synchronous reversible up down counter The 191 is a 4bit binary counter Synchronous
More informationA New Paradigm for Synchronous State Machine Design in Verilog
A New Paradigm for Synchronous State Machine Design in Verilog Randy Nuss Copyright 1999 Idea Consulting Introduction Synchronous State Machines are one of the most common building blocks in modern digital
More informationNTE2053 Integrated Circuit 8 Bit MPU Compatible A/D Converter
NTE2053 Integrated Circuit 8 Bit MPU Compatible A/D Converter Description: The NTE2053 is a CMOS 8 bit successive approximation Analog to Digital converter in a 20 Lead DIP type package which uses a differential
More informationModeling Registers and Counters
Lab Workbook Introduction When several flipflops are grouped together, with a common clock, to hold related information the resulting circuit is called a register. Just like flipflops, registers may
More informationEXPERIMENT 8. FlipFlops and Sequential Circuits
EXPERIMENT 8. FlipFlops and Sequential Circuits I. Introduction I.a. Objectives The objective of this experiment is to become familiar with the basic operational principles of flipflops and counters.
More informationCS311 Lecture: Sequential Circuits
CS311 Lecture: Sequential Circuits Last revised 8/15/2007 Objectives: 1. To introduce asynchronous and synchronous flipflops (latches and pulsetriggered, plus asynchronous preset/clear) 2. To introduce
More informationDM74LS193 Synchronous 4Bit Binary Counter with Dual Clock
September 1986 Revised March 2000 DM74LS193 Synchronous 4Bit Binary Counter with Dual Clock General Description The DM74LS193 circuit is a synchronous up/down 4bit binary counter. Synchronous operation
More informationTraffic Light Controller. Digital Systems Design. Dr. Ted Shaneyfelt
Traffic Light Controller Digital Systems Design Dr. Ted Shaneyfelt December 3, 2008 Table of Contents I. Introduction 3 A. Problem Statement 3 B. Illustration 3 C. State Machine 3 II. Procedure 4 A. State
More informationGray Code Generator and Decoder by Carsten Kristiansen Napier University. November 2004
Gray Code Generator and Decoder by Carsten Kristiansen Napier University November 2004 Title page Author: Carsten Kristiansen. Napier No: 04007712. Assignment title: Design of a Gray Code Generator and
More informationNOTE: The Flatpak version has the same pinouts (Connection Diagram) as the Dual InLine Package.
PRESETTABLE BCD/DECADE UP/DOWN COUNTERS PRESETTABLE 4BIT BINARY UP/DOWN COUNTERS The SN54/74LS90 is a synchronous UP/DOWN BCD Decade (842) Counter and the SN54/74LS9 is a synchronous UP/DOWN Modulo6
More informationSN54HC191, SN74HC191 4BIT SYNCHRONOUS UP/DOWN BINARY COUNTERS
Single Down/Up CountControl Line LookAhead Circuitry Enhances Speed of Cascaded Counters Fully Synchronous in Count Modes Asynchronously Presettable With Load Control Package Options Include Plastic
More informationDM74LS191 Synchronous 4Bit Up/Down Counter with Mode Control
August 1986 Revised February 1999 DM74LS191 Synchronous 4Bit Up/Down Counter with Mode Control General Description The DM74LS191 circuit is a synchronous, reversible, up/ down counter. Synchronous operation
More informationDigital Fundamentals. Lab 8 Asynchronous Counter Applications
Richland College Engineering Technology Rev. 0 B. Donham Rev. 1 (7/2003). Horne Rev. 2 (1/2008). Bradbury Digital Fundamentals CETT 1425 Lab 8 Asynchronous Counter Applications Name: Date: Objectives:
More informationSequential Logic. (Materials taken from: Principles of Computer Hardware by Alan Clements )
Sequential Logic (Materials taken from: Principles of Computer Hardware by Alan Clements ) Sequential vs. Combinational Circuits Combinatorial circuits: their outputs are computed entirely from their present
More informationSo far we have investigated combinational logic for which the output of the logic devices/circuits depends only on the present state of the inputs.
equential Logic o far we have investigated combinational logic for which the output of the logic devices/circuits depends only on the present state of the inputs. In sequential logic the output of the
More informationEngr354: 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 flipflops;
More informationCHAPTER 11 LATCHES AND FLIPFLOPS
CHAPTER 11 LATCHES AND FLIPFLOPS This chapter in the book includes: Objectives Study Guide 11.1 Introduction 11.2 SetReset Latch 11.3 Gated D Latch 11.4 EdgeTriggered D FlipFlop 11.5 SR FlipFlop
More informationHaving read this workbook you should be able to: recognise the arrangement of NAND gates used to form an SR flipflop.
Objectives Having read this workbook you should be able to: recognise the arrangement of NAND gates used to form an SR flipflop. describe how such a flipflop can be SET and RESET. describe the disadvantage
More informationDesign: a mod8 Counter
Design: a mod8 Counter A mod8 counter stores a integer value, and increments that value (say) on each clock tick, and wraps around to 0 if the previous stored value was 7. So, the stored value follows
More informationDecimal Number (base 10) Binary Number (base 2)
LECTURE 5. BINARY COUNTER Before starting with counters there is some vital information that needs to be understood. The most important is the fact that since the outputs of a digital chip can only be
More informationL4: Sequential Building Blocks (Flipflops, Latches and Registers)
L4: Sequential Building Blocks (Flipflops, Latches and Registers) Acknowledgements: Materials in this lecture are courtesy of the following sources and are used with permission. Prof. Randy Katz (Unified
More informationDATA SHEET. HEF40193B MSI 4bit up/down binary counter. For a complete data sheet, please also download: INTEGRATED CIRCUITS
INTEGRATED CIRCUITS DATA SHEET For a complete data sheet, please also download: The IC04 LOCMOS HE4000B Logic Family Specifications HEF, HEC The IC04 LOCMOS HE4000B Logic Package Outlines/Information HEF,
More informationCOMBINATIONAL and SEQUENTIAL LOGIC CIRCUITS Hardware implementation and software design
PH315 COMINATIONAL and SEUENTIAL LOGIC CIRCUITS Hardware implementation and software design A La Rosa I PURPOSE: To familiarize with combinational and sequential logic circuits Combinational circuits
More information7. Latches and FlipFlops
Chapter 7 Latches and FlipFlops Page 1 of 18 7. Latches and FlipFlops Latches and flipflops are the basic elements for storing information. One latch or flipflop can store one bit of information. The
More informationObsolete Product(s)  Obsolete Product(s)
SYNCHRONOUS PROGRAMMABLE 4BIT BINARY COUNTER WITH ASYNCHRONOUS CLEAR INTERNAL LOOKAHEAD FOR FAST COUNTING CARRY OUTPUT FOR CASCADING SYNCHRONOUSLY PROGRAMMABLE LOWPOWER TTL COMPATIBILITY STANDARDIZED
More informationECE380 Digital Logic
ECE38 igital Logic FlipFlops, Registers and Counters: FlipFlops r.. J. Jackson Lecture 25 Flipflops The gated latch circuits presented are level sensitive and can change states more than once during
More informationSEQUENTIAL CIRCUITS. Block diagram. Flip Flop. SR Flip Flop. Block Diagram. Circuit Diagram
SEQUENTIAL CIRCUITS http://www.tutorialspoint.com/computer_logical_organization/sequential_circuits.htm Copyright tutorialspoint.com The combinational circuit does not use any memory. Hence the previous
More informationTable 1 Comparison of DC, UniPolar and Bipolar Stepper Motors
Electronics Exercise 3: UniPolar Stepper Motor Controller / Driver Mechatronics Instructional Laboratory Woodruff School of Mechanical Engineering Georgia Institute of Technology Lab Director: I. Charles
More information(Refer Slide Time: 00:01:16 min)
Digital Computer Organization Prof. P. K. Biswas Department of Electronic & Electrical Communication Engineering Indian Institute of Technology, Kharagpur Lecture No. # 04 CPU Design: Tirning & Control
More informationDIGITAL TECHNICS II. Dr. Bálint Pődör. Óbuda University, Microelectronics and Technology Institute
DIGITAL TECHNICS II Dr. Bálint Pődör Óbuda University, Microelectronics and Technology Institute 2. LECTURE: ELEMENTARY SEUENTIAL CIRCUITS: FLIPFLOPS 1st year BSc course 2nd (Spring) term 2012/2013 1
More informationA Lesson on Digital Clocks, One Shots and Counters
A Lesson on Digital Clocks, One Shots and Counters Topics Clocks & Oscillators LM 555 Timer IC Crystal Oscillators Selection of Variable Resistors Schmitt Gates PowerOn Reset Circuits One Shots Counters
More informationINTEGRATED CIRCUITS. For a complete data sheet, please also download:
INTEGRATED CIRCUITS DATA SEET For a complete data sheet, please also download: The IC6 74C/CT/CU/CMOS ogic Family Specifications The IC6 74C/CT/CU/CMOS ogic Package Information The IC6 74C/CT/CU/CMOS ogic
More informationSN54/74LS192 SN54/74LS193
PRESEABLE BCD/DECADE UP/DOWN COUNER PRESEABLE 4BI BINARY UP/DOWN COUNER he SN4/74LS2 is an UP/DOWN BCD Decade (842) Counter and the SN4/74LS3 is an UP/DOWN MODULO6 Binary Counter. Separate Count Up and
More informationDigital Electronics Part I Combinational and Sequential Logic. Dr. I. J. Wassell
Digital Electronics Part I Combinational and Sequential Logic Dr. I. J. Wassell Introduction Aims To familiarise students with Combinational logic circuits Sequential logic circuits How digital logic gates
More informationCpE358/CS381. Switching Theory and Logical Design. Class 10
CpE358/CS38 Switching Theory and Logical Design Class CpE358/CS38 Summer 24 Copyright 24373 Today Fundamental concepts of digital systems (Mano Chapter ) Binary codes, number systems, and arithmetic
More information