The 8051 Microcontroller and Embedded Systems (2nd Edition)
This book uses a step-by-step approach to teach the fundamentals of assembly language programming and interfacing of the 8051 microcontroller. It uses many examples to clarify concepts. Simple, concise examples are utilized to show what action each instruction performs, then a sample is provided to show its application. This text provides a comprehensive understanding of the internal organization of the 8051 registers and resources in a way that sheds the student's fear of assembly language. Whether students become designers of stand-alone systems or complex embedded systems, they will find this text a useful resource.
Why Read This Book
You will get a clear, example-driven introduction to 8051 assembly language and the chip's on‑board resources, with many hands‑on interfacing examples that show how to connect real sensors, displays, and communication peripherals. The book breaks down instructions and hardware concepts step‑by‑step so you can move from simple programs to complete embedded projects.
Who Will Benefit
Students, hobbyists, and firmware engineers who need a practical, assembly-level understanding of the 8051 family to build or maintain small embedded systems and peripheral interfaces.
Level: Intermediate — Prerequisites: Basic digital logic and familiarity with programming concepts (variables, control flow). Prior C experience is helpful but not required.
Key Takeaways
- Write and debug 8051 assembly programs using the architecture's instruction set and addressing modes.
- Configure and use timers/counters, interrupts, and the serial UART on 8051 devices.
- Design and implement common peripheral interfaces: LED/LCD displays, keypads, ADCs, DACs, and stepper/servo controls.
- Map and manage internal and external memory and understand register and bit-level resource usage.
- Translate application requirements into working 8051 firmware examples and simple embedded projects.
Topics Covered
- Introduction to Embedded Systems and the 8051 Family
- 8051 Architecture and Internal Resources (Registers, Ports, Memory)
- Assembly Language Basics and Instruction Set
- Addressing Modes and Data Transfer Instructions
- I/O Port Programming and Bit Manipulation
- Timers and Counters
- Serial Communication and UART Programming
- Interrupts and Interrupt-driven Design
- External Memory, Memory-mapped I/O and Bus Interface
- Analog Interfacing: ADCs/DACs and Signal Conditioning
- Interfacing Displays, Keypads, and Human Interfaces
- Motor Control and Other Actuator Interfacing
- Worked Examples and System-level Projects
- Appendices: Assembler Directives, Instruction Tables, Variant 8051 Devices
Languages, Platforms & Tools
How It Compares
Compared with Kenneth Ayala's 8051 book, Mazidi's edition is more example- and interfacing-oriented with a step-by-step teaching style; Ayala is often slightly more concise on architecture and instruction nuance.
