8051 Microcontroller Embedded System Design and PLCs

8051 Microcontroller Embedded System Design and PLCs
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8051 Microcontroller Embedded System Design and PLCs

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Publisher: Vayu Education
ISBN: 9789382174141
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Preface
C
omputers now form an integral part of most real-time control systems.With the advent of the microprocessors and microcontrollers in the last few decades the use of computers in control applications has been ever growing. Microcontrollers are single-chip computers which can be used to control real-time systems. Such controllers are also referred to as embedded real-time computers. These devices are low-cost, single-chip and easy to program. A microcontroller contains data and program memory, serial and parallel I O, timers, and external and internal interrupts-all integrated into a single chip that can be purchased for as little as two dollars. About 40 percent of all microcontroller applications are found in office equipment, such as PCs, laser printers, fax machines, and intelligent telephones. About one third of all microcontrollers are found in consumer electronic goods. Products like CD players, hi-fi equipment, video games, washing machines, and cookers fall into this category. The communications market, the automotive market, and the military share the rest of the applications. A programmable logic controller PLC or programmable controller is a digital computer used for automation of electromechanical processes,such as control of machinery on factory assembly lines, amusement rides, or lighting fixtures. PLCs are used in many industries and machines. Unlike general-purpose computers, the PLC is designed for multiple inputs and output arrangements, extended temperature ranges, immunity to electrical noise, and resistance to vibration and impact. This book is written for advanced students, for practicing engineers, and for hobbyists who want to learn more about the programming and applications of 8051 microcontroller PLCs. Knowledge of the Assembly programming language will be useful, and familiarity with at least one member of the 8051 microcontroller will be an advantage. Chapter 1 presents the basic features of microcontrollers, Microcontroller architectures Microcontroller packaging and appearance, criteria in Choosing a Microcontroller , Microcontrollers versus Microprocessors,Application of microcontrollers Chapter 2 reviews the Pinout Description 8051,block diagram of 8051, Oscillator Characteristics, TIMER COUNTER,SFR,Interrupt Chapter 3 reviews the 8051 instruction set, Addressing modes,Writing assembly language programming,Lookup tables. Chapter 4 reviews the Interfacing of LEDs,Keyboard,LCD,ADCs DACs. Chapter 5 reviews the basic idea of 8051 projects. Chapter 6 reviews the introduction of PLCs,working of PLCs,application of PLCs. Chapter 7 introduction of emsdded system and application Arun Rana
Acknowledgement
G
od is omnipotent, omnipresent and omniscient. I bow before him for showing his blessing on me. The present book is an outcome of blessing of god and the good wishes of my parents, colleagues and friends. I express my deepest gratitude to my father Sh. Mahender Singh Rana and Brother Ajay Singh Rana for motivating me at all the stages while writing this book. I am indebted to Dr. Rajesh Malik ,HOD of ECE dept. in NC College, Israna, Dr. J.P.Chauhan, Dr. N.K. Batra, Dr. Jagdish Chaudhary, Dr. K.K. Saini, Dr. A.K.Garg, Dr. Sharad Sharma, Dr. Ashish Chopra, Dr. Paras Chawala Dr. Vinit Singla, for their kind co-operation and