1_ç»ªè®º_508003649

# 1_ç»ªè®º_508003649 - Lecture Notes of the Course

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1/ About this module • Teaching Time: – Every Monday, 3:20pm-4:55pm – Every Thursday, 8:00am-9:35am • Tutorial time: – If you have any questions – On the website ( http://learn.tsinghua.edu.cn ) – According to Teaching schedule

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2/ Teaching Assistants • YAN Jing( 严婧 ) ZHANG Xi( 张希 ) •D u t i e s – Give one-hour tutorial class – Mark the homework • Sent to Room 810, Wei Qing Building （伟清楼） • Thursday Before Deadline, a bag per class – Obtain feedback from the students – Help the lecturer to accomplish this module
3/ Course Aims • Know the principles of logic/digital design • Be able to complete the simple digital design • Basic for DSP, VLSI, Etc

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4/ Examinations • Exercises and Problem: – Involves a project – 30%, well down – 0%, not be handed in six times before the deadline • Final Exam: – 70% –C losed – Questions: Chinese – Answers: Chinese
5/ Course Overview • Introduction(1, Appendix A & B) • Combinational Logic Design(2~5) • Sequential Logic Design(6~10, Appendix C) • Summary

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6/ Introduction • Digital & Analog Systems • Digital Design Example • CMOS Gates • Number Systems • Refer to Chapter 1, Appendix A & B
7/ Digital & Analog • Analog – A quantity is represented by a voltage, current, or meter movement that is proportional to the value of that quantity. – Eg: the common mercury thermometer – Vary over a continuous range of values • Digital – The quantities are represented not by continuously variable indicators but by symbols called digits. – Eg: the digital watch – Vary at some discrete points of values

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8/ Digital Signal • two discrete values – 0: 0~0.8V; logic 0; False; Off; Low; No; Open switch – 1: 2~5V; logic 1; True; On; High; Yes; Closed switch
9/ Positive & Negative Logic • Positive Logic – natural – 0 to Low voltage – 1 to High voltage • Negative Logic – Not often used – 1 to Low voltage – 0 to High voltage

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10/ Noise Margin • A typical gate is not guaranteed to have a precise voltage level for a logic 0/1 output • It may produce a voltage somewhere in a range that is a subset of the range guaranteed to be recognized as a 0/1 by other gate inputs • The difference between the range boundaries is called noise margin V DD 0 V IHmin V ILmax V OHmin V OLmax 1 Prohi- bited 0 1 Prohi- bited 0 V NH V NL V I V I V O V O
11/ Digital & Analog Systems • Digital Systems (Logic/Switching Circuits) – A combination of devices designed to manipulate logical information or physical quantities that are represented in digital form. – Digital Computers and Telephone Systems • Analog Systems – Contains devices that manipulate physical quantities that are represented in analog form. – Audio Amplifiers • What are the advantages of Digital techniques?

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## This note was uploaded on 03/28/2011 for the course EE 30230563 taught by Professor Rongluo during the Spring '09 term at Tsinghua University.

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1_ç»ªè®º_508003649 - Lecture Notes of the Course

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