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The 8051 Microcontroller and Embedded

Systems

Using Assembly and C

Second Edition

Muhammad Ali Mazidi

Janice Gillispie Mazidi

Rolin D. McKinlay

CONTENTS

Introduction to Computing

The 8051 Microcontrollers

8051 Assembly Language Programming

Branch Instructions

I/O Port Programming

8051 Addressing Modes

Arithmetic & Logic Instructions And Programs

8051 Programming in C

8051 Hardware Connection and Hex File

8051 Timer/Counter Programming in Assembly and C

8051 Serial Port Programming in Assembly and C

Interrupts Programming

in Assembly and C

8051 Interfacing to External Memory

8051 Real World Interfacing I: LCD,ADC AND

SENSORS

LCD and Keyboard Interfacing

8051 Interfacing with 8255

Home Automation, Networking, and Entertainment LabDept. of Computer Science and Information Engineering

National Cheng Kung University, TAIWAN

Chung-Ping Young

INTRODUCTION TO

COMPUTING

The 8051 Microcontroller and Embedded

Systems: Using Assembly and CMazidi, Mazidi and McKinlay Department of Computer Science and Information Engineering

National Cheng Kung University, TAIWAN

2 HANEL

OUTLINES

Numbering and coding systems

Digital primer

Inside the computer

Department of Computer Science and Information Engineering

National Cheng Kung University, TAIWAN

3 HANEL

NUMBERING

AND CODING

SYSTEMS

Decimal and

Binary Number

Systems

Human beings use base 10 (

decimal arithmetic

There are 10 distinct symbols, 0, 1, 2, ...,

9

Computers use base 2 (

binary ) system

There are only 0 and 1

These two binary digits are commonly

referred to as bits Department of Computer Science and Information Engineering

National Cheng Kung University, TAIWAN

4 HANEL

NUMBERING

AND CODING

SYSTEMS

Converting

from Decimal to Binary

Divide the decimal number by 2

repeatedly

Keep track of the remainders

Continue this process until the quotient

becomes zero

Write the remainders in reverse order

to obtain the binary number

Ex. Convert 25

10 to binary

Quotient Remainder

25/2 = 12 1 LSB (least significant bit)

12/2 = 6 0

6/2 = 3 0

3/2 = 1 1

1/2 = 0 1 MSB (most significant bit)

Therefore 25

10 = 11001 2 Department of Computer Science and Information Engineering

National Cheng Kung University, TAIWAN

5 HANEL

NUMBERING

AND CODING

SYSTEMS

Converting

from Binary to

Decimal

Know the weight of each bit in a binary

numberquotesdbs_dbs7.pdfusesText_5