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Lecture 1: Introduction to Digital Logic Design

Lecture 1: Introduction to Digital Logic Design. CK Cheng CSE Dept. UC San Diego. Outlines. Administration Motivation Scope. Administration. Web site: http://www.cse.ucsd.edu/classes/sp09/cse140/ WebBoard: http://webboard.ucsd.edu. Administration.

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Lecture 1: Introduction to Digital Logic Design

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  1. Lecture 1: Introduction toDigital Logic Design CK Cheng CSE Dept. UC San Diego

  2. Outlines • Administration • Motivation • Scope

  3. Administration Web site: http://www.cse.ucsd.edu/classes/sp09/cse140/ WebBoard: http://webboard.ucsd.edu

  4. Administration Instructor: CK Cheng, CSE2130, ckcheng+140@ucsd.edu, 858 534-6184 Teaching Assistants: • Thomas Weng, thomaslw@gmail.com • Renshen Wang, rewang@cs.ucsd.edu • Chengmo Yang, c5yang@cs.ucsd.edu • Mingjing Chen, mjchen@cs.ucsd.edu

  5. Administration Schedule • Outlines (Use index to check the location of the textbook) • Lectures: 2:00-3:20PM, TTh, Center 216. • Discussion: 2:00-2:50PM, M, Center 212. • Office hours: 10:30-11:30AM, TTh, CSE 2130.

  6. Administration Textbook • Digital Design and Computer Architecture, David Money Harris and Sarah L. Harris, published by Morgan Kaufmann, 2007. Grading • Midterm 1: 25% (T 4/21) • Midterm 2: 30% (Th 5/14) • Final Exam: 40% (3:00-6:00PM, Th 6/11)

  7. Motivation • Microprocessors have revolutionized our world • Cell phones, internet, rapid advances in medicine, etc. • The semiconductor industry has grown from $21 billion in 1985 to $213 billion in 2004.

  8. Robert Noyce, 1927 - 1990 • Nicknamed “Mayor of Silicon Valley” • Cofounded Fairchild Semiconductor in 1957 • Cofounded Intel in 1968 • Co-invented the integrated circuit

  9. Gordon Moore, 1929 - • Cofounded Intel in 1968 with Robert Noyce. • Moore’s Law: the number of transistors on a computer chip doubles every year (observed in 1965) • Since 1975, transistor counts have doubled every two years.

  10. Moore’s Law “If the automobile had followed the same development cycle as the computer, a Rolls-Royce would today cost $100, get one million miles to the gallon, and explode once a year . . .” – Robert Cringley

  11. Scope • The purpose of this course is that we: • Learn what’s under the hood of an electronic component • Learn the principles of digital design • Learn to systematically debug increasingly complex designs • Design and build a digital system

  12. Scope • Hiding details when they aren’t important

  13. We will cover four major things in this course:- Combinational Logic (Ch 2)- Sequential Networks (Ch 3)- Standard Modules (Ch 5)- System Design (Chs 4, 6-8)

  14. Input Memory File Conditions Pointer Mux Control Subsystem ALU Control Memory Register Conditions Overall Picture of CS140 CLK: Synchronizing Clock

  15. x1 . . . xn x1 . . . xn x1 . . . xn fi(x) fi(x) fi(x) fi(x) fi(x) fi(x) Combinational Logic vs Sequential Network si CLK Combinational logic: Sequential Networks 1) Memory 2) Time Steps (Clock) yi = fi(x1,..,xn) yit = fi (x1t,…,xnt, s1t, …,smt) Sit+1 = gi(x1t,…,xnt, s1t,…,smt)

  16. Scope

  17. Part I. Combinational Logic ab a b ab + cd e (ab+cd) c d cd e • I) Specification • II) Implementation • III) Different Types of Gates

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