The 8051 Microcontroller and Embedded Systems, Volume 1For 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 that when we add 1 + 1 we get 0 with a carry to the next higher place . We will need to determine the sum and the carry for this design . Notice that the sum column above matches the output for the XOR function , and that the ...
CY , the carry flag This flag is set whenever there is a carry out from the d7 bit . This flag bit is affected after an 8 - bit addition or subtraction . It can also be set to 1 or 0 directly by an instruction such as “ SETB C ” and ...
Mnemonic Description Mnemonic Description Byte Oscillator Period 24 24 24 BOOLEAN VARIABLE MANIPULATION CLR с Clear Carry 1 12 CLR bit Clear direct bit 2 12 SETB С Set Carry 1 12 SETB bit Set direct bit 2 .
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Contents
CHAPTERS | 1 |
The 8051 Microcontrollers | 23 |
8051 ASSEMBLY LANGUAGE PROGRAMMING | 35 |
Copyright | |
18 other sections not shown
Other editions - View all
The 8051 Microcontroller and Embedded Systems: Using Assembly and C Mazidi Muhammad Ali No preview available - 2007 |