本书针对目前通用的MCS51系列单片机，在汇编语言的基础上，介绍了单片机的基本原理和应用。主要包括单片机的硬件原理和结构、汇编语言指令系统及其编程、单片机内部资源、单片机的功能扩展、单片机系统的扩展、Proteus仿真软件的使用等内容。本书实例丰富且很多实例用汇编语言给出了程序，方便学生学习。

Preface
Chapter 1 Introduction to Computing
1.1 Computing in Digital Computer System
1.2 Numeral System
1.3 Number Encoding in Computer
1.4 How Does a Computer Work?
1.5 Microprocessor and Microcontroller
Chapter 2 Hardware Configuration for 51 Series Microcontroller
2.1 The Family of 51 Series Microcontroller
2.2 Basic Hardware Configuration and Pins
2.3 CPU and Registers
2.4 Memory
2.5 Clock Circuit and CPU Timing Sequence
2.6 Reset Circuit
2.7 Digital I/O Port Structures and Operation
Chapter 3 Introduction to Program Design
3.1 Introduction
3.2 Instruction System and Addressing Modes
3.3 Pseudo-instructions
3.4 How to Check Some Instructions with Proteus
3.5 Assembly Language Instruction Set
3.6 Programming Examples in Assembly Language
Chapter 4 Memory System Extension
4.1 External Bus Structure
4.2 External Program Memory Extension
4.3 External Data Memory Extension
4.4 Extend the Parallel I/O Port as an External RAM Unit
Chapter 5 Timer and Counter
5.1 Introduction
5.2 Timer/Counter Registers
5.3 The Four Operation Modes of Timer
5.4 More Examples
Chapter 6 Interrupt System
6.1 Introduction
6.2 MCS51 Interrupt System
6.3 MCS51 Interrupt Registers
6.4 Examples of Interrupt Programming
Chapter 7 Serial Communication System
7.1 Introduction
7.2 Serial Communication System of 80C51
7.3 80C51 Serial Communication Modes
7.4 Extend I2C Bus for 80C51
Chapter 8 Interfacing to Peripherals
8.1 Introduction
8.2 Switch Interfacing
8.3 Operation with Keyboard
8.4 Driving Displays
8.5 Interfacing with ADC
8.6 Interfacing with DAC
References