The 8051 Microcontroller and Embedded Systems, Volume 1
For courses teaching the 8051 Microcontoller.
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.
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Notice from the XOR truth table , that whenever the two inputs Inputs Output are the same , the output is zero . This function can be X Y X XOR Y used to compare two bits to see if they are the same . 0 0 0 0 1 1 NAND and NOR gates 10 1 ...
After reading the command register , if bit D7 ( the busy flag ) is high , the LCD is busy and no information ( command or data ) should be issued to it . Only when D7 = 0 can we send data or commands to the LCD . Notice in this method ...
Notice in the previous discussion that PSEN is used to access the external code space and the RD signal is used to access the external data space . To allow a single ROM chip to provide both program code space and data space , we use an ...
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The 8051 Microcontrollers
8051 ASSEMBLY LANGUAGE PROGRAMMING
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