本书是一本关于数字电子技术的经典教材，并根据国内教学的实际情况对内容进行了缩减。全书主要介绍了数字电子技术的基本概念、数字系统、逻辑门、布尔代数和逻辑化简、组合逻辑分析、组合逻辑电路函数、触发器、移位寄存器、计数器、数据存储、数字信号处理、数据传输、集成电路技术等。全书的特色在于示例与练习丰富、图解清晰、写作风格简约。本书第十一版继续秉承长期以来的写作传统，侧重于数字电子技术的核心基础内容的讲解。本书通过丰富的插图、例题、练习和若干应用帮助读者深入理解相关的基本概念。

Thomas L.Floyd于1964年获得了佛罗里达大学的电气工程学学士学位，同年在德州仪器公司开始了他的职业生涯，期间获得了硕士学位。之后任教于美国多所大学，主要教授电子技术、数字通信系统等课程。
余璆，上海工程技术大学教师，长期讲授数字电路基础与电子学课程，具有丰富的教学经验。负责本书第九版、第十版、第十一版的英文版改编和翻译工作。

目??录


Chapter 1?Introductory Concepts 1
1-1　Digital and Analog Quantities 1
1-2　Binary Digits, Logic Levels, and Digital Waveforms 4
1-3　Fixed-Function Logic Devices 9

Chapter 2?Number Systems, Operations, and Codes 14
2-1　Decimal Numbers 14
2-2　Binary Numbers 15
2-3　Decimal-to-Binary Conversion 18
2-4　Binary Arithmetic 20
2-5　Complements of Binary Numbers 23
2-6　Signed Numbers 25
2-7　Arithmetic Operations with Signed Numbers 30
2-8　Hexadecimal Numbers 36
2-9　Octal Numbers 41
2-10?Binary Coded Decimal (BCD) 43
2-11?Digital Codes 46
2-12?Error Codes 48

Chapter 3?Logic Gates 61
3-1　The Inverter 61
3-2　The AND Gate 63
3-3　The OR Gate 69
3-4　The NAND Gate 73
3-5　The NOR Gate 77
3-6　The Exclusive-OR and Exclusive-NOR Gates 81
3-7　Fixed-Function Logic Gates 84

Chapter 4?Boolean Algebra and Logic Simplification 99
4-1　Boolean Operations and Expressions 99
4-2　Laws and Rules of Boolean Algebra 100
4-3　DeMorgan’s Theorems 105
4-4　Boolean Analysis of Logic Circuits 108
4-5　Logic Simplification Using Boolean Algebra 110
4-6　Standard Forms of Boolean Expressions 114
4-7　Boolean Expressions and Truth Tables 119
4-8　The Karnaugh Map 122
4-9　Karnaugh Map SOP Minimization 125
4-10?Karnaugh Map POS Minimization 133
4-11?The Quine-McCluskey Method 137

Chapter 5?Combinational Logic Analysis 149
5-1　Basic Combinational Logic Circuits 149
5-2　Implementing Combinational Logic 153
5-3　The Universal Property of NAND and NOR Gates 158
5-4　Combinational Logic Using NAND and NOR Gates 160
5-5　Pulse Waveform Operation 164

Chapter 6?Functions of Combinational Logic 174
6-1　Half and Full Adders 174
6-2　Parallel Binary Adders 177
6-3　Ripple Carry and Look-Ahead Carry Adders 183
6-4　Comparators 186
6-5　Decoders 189
6-6　Encoders 195
6-7　Code Converters 198
6-8　Multiplexers (Data Selectors) 201
6-9　Demultiplexers 207
6-10?Parity Generators/Checkers 209

Chapter 7?Latches, Flip-Flops, and Timers 221
7-1　Latches 221
7-2　Flip-Flops 227
7-3　Flip-Flop Operating Characteristics 236
7-4　Flip-Flop Applications 238
7-5　One-Shots 242
7-6　The Astable Multivibrator 249

Chapter 8?Shift Registers 261
8-1　Shift Register Operations 261
8-2　Types of Shift Register Data I/Os 262
8-3　Bidirectional Shift Registers 270
8-4　Shift Register Counters 272
8-5　Shift Register Applications 275
8-6　Logic Symbols with Dependency Notation 282

Chapter 9?Counters 289
9-1　Finite State Machines 289
9-2　Asynchronous Counters 291
9-3　Synchronous Counters 297
9-4　Up/Down Synchronous Counters 303
9-5　Design of Synchronous Counters 306
9-6　Cascaded Counters 313
9-7　Counter Decoding 316
9-8　Counter Applications 319
9-9　Logic Symbols with Dependency Notation 323

Chapter 10?Data Storage 333
10-1　Semiconductor Memory Basics 333
10-2　The Random-Access Memory (RAM) 338
10-3　The Read-Only Memory (ROM) 350
10-4　Programmable ROMs 354
10-5　The Flash Memory 357
10-6　Memory Expansion 361
10-7　Special Types of Memories 366
10-8　Magnetic and Optical Storage 370

Chapter 11?Signal Conversion and Processing 382
11-1　Analog-to-Digital Conversion 382
11-2　Methods of Analog-to-Digital Conversion 388
11-3　Methods of Digital-to-Analog Conversion 397
11-4　Digital Signal Processing 404

Chapter 12?Data Transmission 411
12-1　Data Transmission Media 411
12-2　Methods and Modes of Data Transmission 415
12-3　Modulation of Analog Signals with Digital Data 420
12-4　Modulation of Digital Signals with Analog Data 423
12-5　Multiplexing and Demultiplexing 428
12-6　Bus Basics 433
12-7　Parallel Buses 437
12-8　The Universal Serial Bus (USB) 442
12-9　Other Serial Buses 445
12-10?Bus Interfacing 450

Answers to Odd-Numbered Problems 463
Glossary 481
Chapter 13?Integrated Circuit Technologies(On Website)