Johnson Counter
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This document discusses Johnson counters, which are a modification of ring counters. In a Johnson counter, the output from the last flip-flop is inverted and fed back to the input of the first flip-flop, rather than directly connecting the last output to the first input as in a ring counter. This allows a Johnson counter to use half as many flip-flops as a standard ring counter of the same modulus. The document provides the circuit diagram, truth table, and timing diagram of a 4-bit Johnson counter, and lists some example uses and components needed to build a 4-bit Johnson counter.
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"爐爐 爐踱 爐爐爐伍ぞ爐 爐爛 爐萎爐 爐爛爐 爐爛爐爐 爐項爐爐 爐項; 爐爐伍げ爐逗, 爐踱 爐爛爐萎 爐むぐ爐 爐伍 爐朽た爐爐伍た爐 爐爐爐伍ぞ爐 爐項爐爐 爐爐爐爛 爐爛爐朽え 爐爛 爐伍が爐伍 爐爐項い爛爐朽お爛爐萎爐 爐爐爛爐爛爐謹爐 爐項爛 爐爐爐爛 爐爛爐朽え 爐爛 爐爐爛爐爛爐謹爐 爐爛 爐伍ぞ爐 爐爐 爐爐鉦爐むた爐 爐爛爐萎ぃ爐鉦げ爛 爐爛 爐爐むぞ 爐爐萎え爛 爐爛 爐迦た爐爛, 爐爐爐爛 爐爐 爐爛 爐項ぎ爛爐謹ぞ 爐爐鉦爛爐萎い-爐爛爐むえ 爐萎爐爛 爐爛 爐爛爐謹た爐 爐爐萎爐爛 爐爐 爐爐爐爛 爐爐 爐爛 爐爛爐萎爐 爐朽た爐爐伍た爐 爐爐爐伍ぞ爐 爐爐爐鉦え爛 爐爛 爐迦た爐 爐伍う爐 爐爛爐謹た爐 爐爐鉦ぐ爐 爐萎爛爐爛"
"爐爐爛爐 爐爐 爐爐爛爐爐 爐伍 爐踱 爐爐爐伍ぞ爐 爐爛 爐萎爐 爐爛爐, 爐爐 爐爐逗じ爛 爐爛 爐爛爐爛爐爐 爐оぐ爛爐 爐伍 爐伍爐爐爐оた爐 爐項 爐伍爐むぞ 爐項 爛 爐踱 爐爐爐伍ぞ爐 爐項爐爛 爐爐, 爐爐爐爛 爐爛爐萎ぎ爛爐 爐爐 爐爛爐迦た爐 爐оぐ爛爐 爐項 爐爐鉦え爐 爐оぐ爛爐爛 爐伍爛爐爛 爐爐む爐-爐朽た爐爐鉦じ 爐爛 -爐爐 爐爐爛爐爐鉦じ 爐項た 爐爐項ぞ爐оぐ爛爐 爐項爛"
爐爐逗じ 爐伍た爐伍爐爐 爐爐 爐爐 爐爛 爐爐爐÷ぜ 爐爐 爐爐 爐оぞ爐萎ぃ 爐爐萎え爛 爐伍 爐踱 爐爐伍爛/爐爐爐爛 爐朽ぞ爐伍爐むさ爐逗爐むぞ 爐爛爐 爐爐爐爛 爐爐 爐爛 爐爐項じ爛爐 爐爐 爐伍爐む 爐項爐, 爐爐 爐爛爐萎 爐むぐ爐 爐伍 爐朽た爐爐伍た爐 爐爐爐伍ぞ爐 爐爐爐爛 爐爛 爐迦た爐爛 爐爛爐朽え 爐爛 爐爐爛爐爛爐謹爐 爐爛 爐爐逗ざ爐 爐爛爐 爐爐爛爐萎じ爐 爐項
爐伍爐む 爐項爐, 爐踱朽 爐踱 爐爐む爐爛爐劇爐 爐爛爐朽え 爐爛爐萎ぞ爐爛爐 爐爐萎え爛 爐爛爐 爐伍爛爐劇ぎ 爐項 爐伍爐む 爐項, 爐朽す爐 爐爐項ぞ爐оぐ爛爐 爐項爛" -爐爐項ぞ爐爐鉦え爐
舒仆亠从亳亠 仗仂亞舒仄仄 SkyDNS
舒仆亠从亳亠 仗仂亞舒仄仄 SkyDNSSkyDNS
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舒从 亟亳亳弍ﾑ仂舒仄 仗仂亞舒仄仄仆 仗仂亟从仂于, 亠亠仍仍亠舒仄 亳 亠于亳仆仄 从仂仄仗舒仆亳礆 舒亳亳 仍亳仆亠亶从 于仂亳 仗仂亟从仂于 亳 仍亞 于亞仂亟仂亶 亟仍 亠弍 亳 于仂亳 从仍亳亠仆仂于? 丕亰仆舒亶亠, 仂 仗亠亟仍舒亞舒亠 于舒仄 SkyDNS!
Discos durosJajo Hernandez
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El documento explica la evoluci坦n de los discos duros, comenzando con las primeras unidades de 10 MB en los ordenadores IBM XT y describiendo interfaces como ST506, MFM, RLL y SCSI. Luego describe el est叩ndar IDE y sus mejoras como Enhanced IDE y Ultra DMA, que permitieron mayores tasas de transferencia y capacidades de almacenamiento. Finalmente, explica c坦mo la limitaci坦n de 528 MB se debe a la compatibilidad requerida entre la BIOS del PC y el est叩ndar IDE.Similar to Johnson Counter (20)
Digital counter 
Digital counter Bhaskar Kumar Jha
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The document summarizes different types of digital counters, including asynchronous counters, synchronous counters, ring counters, and Johnson counters. Asynchronous counters have each flip-flop triggered by the previous one, limiting speed, while synchronous counters trigger all flip-flops simultaneously using a common clock, increasing speed. Ring counters circulate a single '1' bit around the register. Johnson counters are like ring counters but with the inverted output of the last flip-flop connected to the first. Examples and applications of each type are provided.Presentation on Counters for (Digital Systems Design).pptx
Presentation on Counters for (Digital Systems Design).pptxAniruddh70
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1. Counters are sequential circuits that cycle through a sequence of states upon receiving a clock pulse or other input signal. They are used for applications like counting events, generating timing sequences, and addressing memory.
2. There are two main types of counters: asynchronous/ripple counters where each flip-flop is triggered by the previous one, and synchronous counters where all flip-flops are triggered simultaneously by a clock. Asynchronous counters are simpler but slower while synchronous counters are faster but more complex.
3. Binary counters follow a binary sequence and can count from 0 to 2n-1 for an n-bit counter. Other counter types include up/down, ring, Johnson, and decade counters.Chapter 7_Counters (EEEg4302).pdf
Chapter 7_Counters (EEEg4302).pdfTamiratDejene1
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Digital Logic Design (EEEg4302)
Chapter 7 : Counters
This chapter discusses different types of counters, including asynchronous (ripple) counters and synchronous counters. Asynchronous counters use a ripple effect where one flip-flop triggers the next. Synchronous counters use a common clock signal to trigger all flip-flops simultaneously. The chapter also covers up/down counters, which can count up or down based on control signals, and methods for designing synchronous counters through state diagrams and logic expressions.Counters
CountersLee Diaz
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Counters are sequential circuits where the output value increases by one on each clock cycle and wraps around back to zero after reaching the maximum value. Ripple counters are asynchronous counters where the flip-flops are not all connected to the same clock, resulting in a rippling effect where each flip-flop responds one after the other. In ripple counters, the output of one flip-flop triggers the next flip-flop, and the period of the output doubles with each additional flip-flop.Counters
CountersLee Diaz
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Counters are sequential circuits where the output value increases by one on each clock cycle and wraps around back to zero after reaching the maximum value. Ripple counters are asynchronous counters where the flip-flops are not connected to a common clock, but instead are triggered one after another by each previous flip-flop's output in a ripple effect. This causes the periods of each successive flip-flop to be multiples of the clock period, with the last flip-flop having the largest period of 2n for an n-bit ripple counter.COUNTERS.pptx
COUNTERS.pptxSaifURehmanSidhu
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There are several types of counters that can be implemented using flip-flops and logic gates. Asynchronous/ripple counters use the output of one flip-flop as the clock input for the next flip-flop, resulting in the clock pulse "ripping" through the chain. Synchronous counters clock all flip-flops simultaneously using a single clock. Decade counters count to 10 before resetting. Shift register counters like ring counters and Johnson counters produce specific output sequences by feeding the output back as the input.Ring oscillator.pptx
Ring oscillator.pptxJaiLegal
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The document discusses ring oscillators, which are electronic circuits that produce continuous waveforms without input. Ring oscillators use an odd number of inverters connected in a feedback loop. The document describes the design and simulation of 3-stage, 5-stage, and 9-stage ring oscillators using 180nm CMOS technology. Simulation results show frequency decreases and power consumption increases as the number of stages increases. The 5-stage ring oscillator has the lowest power consumption of the three.CSL 202, Counters using Flipflops
CSL 202, Counters using FlipflopsCKSunith1
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The attached narrated power point presentation reviews the construction, working and timing diagrams of ring and johnson counters as well as asynchronous and synchronous up, down, up/down and decade counters using popular flipflop ICs. The material will be useful for KTU B Tech second year students who prepare for the subject CSL 202, Digital Laboratory.
Digital Counter Design
Digital Counter DesignGargiKhanna1
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This document discusses asynchronous and synchronous counters. It provides examples of MOD-4, MOD-8, and MOD-6 asynchronous up counters using D flip-flops. It explains how synchronous counters use a common clock signal for all flip-flops. Examples are given for designing MOD-4 and MOD-4 synchronous up and down counters using JK flip-flops. The document also discusses asynchronous counter ICs and provides examples of MOD counters greater than a power of 2, such as MOD-9 and MOD-10, using T flip-flops.
Counters, Synchronous & Asynchronous Counters
Counters, Synchronous & Asynchronous CountersBony Yamin
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This presentation discusses synchronous and asynchronous counters. It defines a counter as a register that counts clock pulses. Asynchronous counters do not use a universal clock; the clock input of subsequent flip-flops is driven by the output of the previous flip-flop, creating a ripple effect. Synchronous counters simultaneously provide a clock signal to all flip-flops. Asynchronous counters are slower but have a simpler circuit than synchronous counters. The presentation compares the two types and discusses their speed, complexity, cost, and whether they are parallel or serial.Counters-Counter is a sequential circuit.pptx
Counters-Counter is a sequential circuit.pptxBINJAD1
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Counter is a sequential circuit. A digital circuit which is used for a counting pulses is known counter. Counter is the widest application of flip-flops.Instrumentation and Automation of Power Plant.pptx
Instrumentation and Automation of Power Plant.pptxFarsanaMuhammed2
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This document discusses instrumentation and automation systems used in power plants. It describes various types of measurements taken in power plants including mechanical, electrical, pressure, temperature, and flow measurements. It then explains different electrical measuring systems used such as moving coil instruments, permanent magnet type instruments, dynamometer type instruments, and electronic instruments. It provides details on various instruments used for measurements including voltmeters, ammeters, power factor meters, electricity meters, and digital frequency meters. It discusses construction, working principles and applications of these instruments. It also lists some non-electrical parameters measured in power plants.Counters_pptx.pptx
Counters_pptx.pptxYeHtetAung35
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This document discusses counters and their applications. It begins by defining a counter as a sequential digital device used for counting up or down. There are different types of counters including asynchronous (ripple) counters and binary counters. Counters are used for applications like frequency division and reducing the frequency of a clock signal. Flip-flops are also discussed as they are the basic building blocks of counters. Specific counter circuits like binary ripple counters, BCD counters, and techniques for designing counters with modular values other than powers of two are described.FYBSC IT Digital Electronics Unit V Chapter I Counters
FYBSC IT Digital Electronics Unit V Chapter I CountersArti Parab Academics
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Counters:
Introduction, Asynchronous counter, Terms related to counters, IC-7493 (4-bit binary counter), Synchronous counter, Bushing, Type T-Design, Type JK Design, Presettable counter, IC-7490, IC 7492, Synchronous counter ICs, Analysis of counter circuitsUnit4_DE.pptx
Unit4_DE.pptxPriyankaJain98423
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The document provides an overview of various types of shift registers and counters. It describes serial-in serial-out, serial-in parallel-out, parallel-in serial-out, and parallel-in parallel-out shift registers. It explains how each type handles data input and output and the number of clock cycles needed for loading and reading. It also covers asynchronous and synchronous counters such as ripple counters and how they differ in clocking approach. Bidirectional shift registers are described as able to shift data either left or right depending on the mode.Counters r012
Counters r012arunachalamr16
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The document discusses different types of counters including ring counters, ripple counters, synchronous counters, and modulo-N counters. It provides details on their circuit designs and operating principles. Ring counters transfer a '1' output between stages with each clock cycle. Ripple counters use one flip-flop's output to clock the next. Synchronous counters apply clock pulses simultaneously. Modulo-N counters reset after N clock cycles using logic gates. Decade counters reset after a count of 10 to provide decimal output.Speed measurement
Speed measurementEr Ashvin Deogade
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1. Tachometers are instruments used to measure rotational speed and can be classified as mechanical, electrical, or contactless types based on their measurement technique.
2. Mechanical tachometers include revolution counters, hand speed indicators, tachoscopes, and centrifugal and resonance tachometers. Revolution counters measure speeds up to 2000-3000 rpm while hand speed indicators measure 20,000 to 30,000 rpm.
3. Electrical tachometers include eddy current, tachogenerator, inductive pickup, capacitive pickup, and photo-electric types. Eddy current tachometers measure up to 12,000 rpm and tachogenerators translate rotational speeds into electrical signals.Johnson Counter
- 1. Johnson Counters Jatinder Kumar chaurasia(11508173) M.Revanth(11503559) O.Purnachandra(11504239)
- 2. Introduction to counters Counters count no of times a particular event occurred A counter used two or more flip-flop depending upon the no. of bits required There are two types of counters: 1.Asynchronous counter 2. Synchronous counter Asynchronous counter used a single clock at the first stage Synchronous counter ,all flip flops are clocked together with a common clock pulse
- 3. Johnson counter Johnson counters also called twisted ring counters It is a modification of ring counter The only difference is that instead of last output(Qd) back to the input(Qa) the not of (^Qd) is connected to the first input.
- 4. Circuit diagram of 4 bit Johnson counter
- 5. Truth table of Johnson counter
- 6. Timing diagram of 4 bit Johnson counter
- 7. Uses of Johnson counter Used in walking LEDs Used to convert square waves to sine waves
- 8. Conclusion Johnson counter is a modified ring counter where the output from the last flip- flop is inverted and feed back to the input of first flip-flop The main advantage of Johnson counter is that it only needs half the no. of flip flops compared to the standard ring counter of same mod If we use n flip-flops then it is known as 2n bit Johnson counter or mod-2n Johnson counter
- 9. Components used for making 4 bit Johnson counter 7474-IC(D-flipflop):2 5 resistors(100 ohm) 5 LED bulbs One battery(9v) Wires(20m) One 555 timer(bistable multivibrator used as a clock)