Subject: Digital Circuits Code: EI205 Level: Year 2 Lecturer: Wang, Kaizhi,Digital Circuits 数字电路（数字电子技术）,School of Electronic Information and Electrical Engineering Shanghai Jiao Tong University EI205 Digital Circuits (2009-2010-1),Lecturer: Dr. Wang Kaizhi Office: SEIEE 1-415 Ph: 34204198 email: kz_wangsjtu.edu.cn Course WEB page: http:/ee.sjtu.edu.cn/po/Class-web/digital-circuit/index.htm,Lectures: Tuesday 08 AM, Friday 10 AM at 107 Assessment: Homework + Attendance 10% Group-work and report 10% Mid-semester quiz 30% Final exam (2 hr) 50%,Earn Your Score,Textbook,Required: Digital Fundamentals 7/E by Thomas L Floyd, China Science Press & Pearson Education, 7-03-010134-0 Recommended:Digital Logic Applications and Design by John M. Yarbrough, China Machine Press & Thomson Learning, 7-111-10837-X,Digital Fundamentals 7/E,Other reference books,Recommended:清华大学电子学教研组编，阎石主编，数字电子技术基础，第四版，高等教育出版社，7-04-006696-3 Recommended:王毓银主编，数字电路逻辑设计（脉冲与数字电路，第三版），高等教育出版社，7-04-007730-2,数字电子技术基础,数字电路逻辑设计,Course Description:,Digital Circuits is one of the core courses designed for sophomores in all curricular relating to electrical engineering and computer science. The overall goals are to analyze and design digital logic circuits which constitute the foundation for preparing a student to take follow-on courses, develop skills required to solve engineering problems. Main topics include digital systems and codes, logic gates, Boolean algebra, logic simplification, combinational logic circuits, flip-flops and related devices, programmable logic devices, sequential logic circuits, large-scale integrated circuits, and analog-to-digital and digital-to-analog converters.,Course Description:,One of the core courses for EE & CS An Entry to the digital world The foundation for preparing follow-on courses The overall goals are to analyze and design digital logic circuits,Topics,digital systems and codes, logic gates, Boolean algebra, logic simplification, combinational logic circuits, flip-flops and related devices, programmable logic devices, sequential logic circuits, large-scale integrated circuits analog-to-digital and digital-to-analog converters,CHAPTER 1 INTRODUCTORY DIGITAL CONCEPTS 数字概念简介,Key Words,Digital quantities （数字量） Analog quantities （模拟量） Binary digits （二进制数） Bit （位） Pulse waveform （脉冲波） The clock （时钟） Timing diagrams （时序图）,Key Words,Data （数据） Serial （串行） Parallel （并行） Input （输入） Output （输出）,1-1 DIGITAL AND ANALOG QUANTITIES 数字量和模拟量,Introductory Paragraph,Electronic circuits can be divided into two broad categories, digital and analog. Digital electronics involves quantities with discrete values, Analog electronics involves quantities with continuous values. Although you will studying digital fundamentals in this book, you should also know about analog because many applications require both.,Whats Analog Quantity?,An analog quantity, having continuous values, takes on all the infinite values in between, say, a, b.,What s Digital Quantity?,A digital quantity has a set of discrete values.,Analog Example,A public address system, used to amplify sound so that it can be heard by large audience, is one example of an application of analog electronics.,Digital Example,A computer system is one example of an application of digital electronics.,A Mixed System,The compact disk (CD) player is an example of a system in which both digital and analog circuits are used.,The Digital Advantage,Digital has certain advantages over analog, e.g., digital data can be stored, processed, and transmitted more efficiently and reliably than analog data.,1-2 BINARY DIGITS, LOGIC LEVELS, and DIGITAL WAVEFORMS 二进制数、逻辑电平和数字波形,Introductory Paragraph,Digital electronics involves circuits and systems in which there are only two possible states. These states are represented by Two different voltage levels: a HIGH and a LOW. Two current levels, open and closed switches, or lamps turned on and off. In digital systems, combinations of the two states, called codes, are used to represent numbers, symbols, alphabetic characters, and other types of information. The two-state number system is called binary, and its two digits are 0 and 1. A binary digit is called a bit.,Binary Digits,The two digits in the binary system, 1 and 0, are called bits, which is a contraction of the words binary digit.,How to represent 0 and 1?,In digital circuits, two different voltage levels are used to represent the two bits. The higher/lower voltage level is referred to as a HIGH/LOW, or H/L.,Logic Levels,The voltages used to represent a 1 and a 0 are called logic levels. In a practical digital circuit, a HIGH can be any voltage between a specified minimum value and a specified maximum value. Likewise, a LOW can be any voltage between a specified minimum and a specified maximum.,Positive Logic System（正逻辑）,A 1 is represented by HIGH and a 0 is represented by LOW.,Negative Logic System（负逻辑）,A 0 is represented by HIGH and a 1 is represented by LOW.,Codes（编码）