Lecture11 - ENGRD 2300 Introduction to Digital Logic Design...

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Lecture 11: 1 ENGRD 2300 Introduction to Digital Logic Design Sequential Logic Design: Clocks Latches Flip-Flops Fall 2009
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Lecture 11: Announcements HW3 is due Wed Oct 7, at 1:25pm Prelim 1 Tue Oct 20 Details to come Lab 4 make up If you have missed a lab due to illness, you may make it up Wed Oct 14 between 1:25-4:25pm Email me if you would like to do this. Lab 5 to be posted Prelab 5 due Friday Oct 23 TA Evals, Oct 7 to Oct 18 2
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Lecture 11: Readings Chapter 1, Sections 3.1-3.7 Sections 2.1–2.9 Section 4.1 – 4.4 Sections 6.1 – 6.11 Sections 7.1, 7.2 (TODAY) Sections 7.3 (Thursday) 3
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Lecture 11: CUGEM Information Session -Multidisciplinary student project team in emerging field of synthetic biology -Compete in iGEM, an international synthetic biology competition with teams from 150 top institutes around the world <www.igem.org> -Projects in biofuel, nanotechnology, biosensors, drug delivery, and gene therapy. October 8 th , 4:30PM Malott 253 Recruiting ECE, ME, MSE, Bio, BEE, BME, Chem, Majors and more, no prerequisites! Learn how to do research while working in a fun interdisciplinary environment! Come to the info session to learn more! http://www.rso.cornell.edu/gem/ Cornell University Genetic Engineering Machines Questions? xzx2@cornell.edu
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Lecture 11: 5 Combinational vs. Sequential Circuits Combinational Output depends only on current inputs No feedback loops “memory-less” Sequential Output depends on past history plus current inputs (possibly) Contains feedback loops Has “memory” Combinational Logic inputs outputs Combinational Logic inputs outputs feedback loop Combinational Circuit Sequential Circuit State
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Lecture 11: 6 Sequential Circuits Outputs depend on current inputs and current state The current state embodies information about the past Needed to create current output based on current input State variables tell you “where the circuit is” Function of logic signals in the circuit State variables change at predetermined points
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Lecture11 - ENGRD 2300 Introduction to Digital Logic Design...

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