Synchronous Counters

Feb 01, 2013

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Lecture Overview. Classifications of CountersDefinitionsSynchronous CounterModulus 8 with Discrete Gates (SSI)Modulus 16 with Discrete Gates (SSI)74LS163 Synchronous 4 Bit Counter Understanding DeviceTruncated Count. Classifications of Counters. Asynchronous CountersOnly the first flip-flop

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Synchronous Counters

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Counters

Counters Photon Counting Chip (PCC) Picture of fuse using PCC Interest The Difference Engine (1872) was a general purpose mechanical calculator solving mathematical problems with up to 31 digit places of accuracy. Through the use of punch-cards, the Analytical Engine could be programmed

2.03k views • 24 slides

Counters

Counters. Topics Counter Overview Easy Counter VIs for: Event Counting Pulse Generation Pulse Measurement Frequency Measurement Position Measurement. Maximum Rise/Fall Time = 50ns. +5.0 V. high. +2.0 V. indeterminate. +0.8 V. low. 0 V. Minimum Pulse Width = 10ns.

743 views • 33 slides

Counters

Counters. Switching and Logic Lab Standard Laboratory Exercises. Suggestions and Warnings. Read for detail and comprehension Should be able to complete within normal laboratory period. Make sure you program unused pins as tri-state inputs or you may burnout EPM7128S device on PLDT-2.

631 views • 27 slides

Synthesis of Reversible Synchronous Counters

Synthesis of Reversible Synchronous Counters. Mozammel H. A. Khan East West University, Bangladesh mhakhan@ewubd.edu Marek Perkowski Portland State University, USA mperkows@cecs.pdx.edu. ISMVL 2011, 23-25 May 2011, Tuusula, Finland. Agenda. Motivation Background

658 views • 43 slides

Counters

Counters. According to how they handle input transitions Synchronous Asynchronous According to counting sequence Binary Non-binary. Synchronous binary counter. Synchronous because all flip-flop operate from the same clock This one contains negative edge triggered FFs.

858 views • 23 slides

Counters

Counters. Next, we’ll look at different kinds of counters and discuss how to build them. These are not only examples of sequential analysis and design, but also real devices used in larger circuits, as we’ll see in the coming weeks. 1. 10. 00. 1. 1. 01. 11. 1. Introducing counters.

593 views • 19 slides

COUNTERS

COUNTERS. Counters Transition Tables Moore Outputs Counter Timing. D Q. D Q. Current State. State Memory. Next State. Input Forming Logic. General Sequential Systems. D Q. D Q. A Sequential Counter. 2. Current State. State Memory. +1. Clock edges…. Next State.

650 views • 32 slides

Synchronous Counters

Synchronous Counters. Lecture Overview. Classifications of Counters Definitions Synchronous Counter… Modulus 8 with Discrete Gates (SSI) Modulus 16 with Discrete Gates (SSI) 74LS163 Synchronous 4 Bit Counter Understanding Device Truncated Count. Classifications of Counters.

575 views • 14 slides

Counters

Counters . Discussion D8.3. Counters. Divide-by-8 Counter Behavioral Counter in Verilog Counter using One-Hot State Machine. Divide-by-8 Counter. A state diagram for a divide by 8 counter . Present state Next state. State Q2 Q1 Q0 D2 D1 D0. s0 0 0 0 0 0 1

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Asynchronous and Synchronous Counters

Asynchronous and Synchronous Counters. Week 10 and Week 11 (Lecture 1 of 2). Counters. * Counters are important digital electronic circuits. * They are Sequential logic circuits because timing is obviously important and they need a memory characteristic.

1.6k views • 46 slides

Counters

7. 1. P. 10. 163. 0. 1. T. 15. 0. 2. RCO. CLK. 6. 11. QD. QD. D. CLK. 5. 12. QC. C. QC. 4. 13. B. QB. QB. 3. 14. A. QA. QA. 9. 1. LOAD. 0. 1. 1. CLR. 0. CLR. Counters. An (up/down) k-bit counter produces a sequence of k-bit binary numbers in a

796 views • 37 slides

Counters

Counters. In class excercise. How to implement a “counter”, which will count as 0,3,1,4,5,7,0,3,1,……. Finite State Machines. Parity checking. Design a parity checking circuit that has one input X, and one output O. X may change every clock cycle. The change happens at the falling edge.

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Counters

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: Ripple Counters

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Asynchronous vs. Synchronous Counters

Asynchronous vs. Synchronous Counters. Ripple Counters. Deceptively attractive alternative to synchronous design style. Count signal ripples from left to right. State transitions are not sharp!. Can lead to "spiked outputs" from combinational logic decoding the counter's state.

543 views • 24 slides

Counters and Registers Synchronous Counters

Counters and Registers Synchronous Counters. 7-7 Synchronous Down and Up/Down Counters. In the previous lecture, we’ve learned how synchronous counters work and how they differ from the asychronous counters in the specficiations and the propagation time delay.

769 views • 26 slides

Counters

Counters. Discussion D5.3 Example 33. Counters. 3-Bit, Divide-by-8 Counter 3-Bit Behavioral Counter in Verilog Modulo-5 Counter An N-Bit Counter. 3-Bit, Divide-by-8 Counter. Present state Next state. State q2 q1 q0 D2 D1 D0. s0 0 0 0 0 0 1

674 views • 23 slides

Counters

c. n. t. 4-bit up-counter. t. c. C. 4. 1. 0. 1111. 0000. 4-bit up-counter. c. n. t. ld. 4-bit register. 4. 4. +1. 4. 4. t. c. C. Counters. N-bit up-counter : N-bit register that can increment (add 1) to its own value on each clock cycle

560 views • 27 slides

Counters

Counters. Mano & Kime Sections 5-4, 5-5. Counters. Ripple Counter Synchronous Binary Counters Design with D Flip-Flops Design with J-K Flip-Flops Counters in VHDL. Counters ---. A 4-bit Ripple Counter. Less Significant Bit output is Clock for Next Significant Bit!

588 views • 31 slides

Counters

Counters. Introduction: Counters. Counters are circuits that cycle through a specified number of states. Two types of counters: synchronous (parallel) counters asynchronous (ripple) counters Ripple counters allow some flip-flop outputs to be used as a source of clock for other flip-flops.

566 views • 36 slides

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