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. |
From inside the book
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Page 116
... result is positive ; if CY = 1 , the result is negative and the destination has the 2's complement of the result . Normally , the result is left in 2's complement , but the CPL ( complement ) and INC instructions can be used to change ...
... result is positive ; if CY = 1 , the result is negative and the destination has the 2's complement of the result . Normally , the result is left in 2's complement , but the CPL ( complement ) and INC instructions can be used to change ...
Page 122
... result . The CPU understands only Os and 1s and ignores the human convention of positive and negative numbers . What is an overflow ? If the result of an operation on signed numbers is too large for the register , an overflow has ...
... result . The CPU understands only Os and 1s and ignores the human convention of positive and negative numbers . What is an overflow ? If the result of an operation on signed numbers is too large for the register , an overflow has ...
Page 125
... result in R3 . The result must be in BCD . 3. Write a program to add the following numbers and save the result in R2 , R3 . The data is stored in on - chip ROM . MYDATA : ORG DB 250H 53,94,56,92,74,65,43,23,83 4. Modify Problem 3 to ...
... result in R3 . The result must be in BCD . 3. Write a program to add the following numbers and save the result in R2 , R3 . The data is stored in on - chip ROM . MYDATA : ORG DB 250H 53,94,56,92,74,65,43,23,83 4. Modify Problem 3 to ...
Contents
CHAPTERS | 1 |
The 8051 Microcontrollers | 23 |
THE 8051 MICROCONTROLLERS 223 Section 1 1 Microcontrollers and Embedded Processors | 24 |
Copyright | |
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Other editions - View all
The 8051 Microcontroller And Embedded Systems Using Assembly And C, 2/E Muhammad Ali Mazidi,Mazidi No preview available - 2007 |
Common terms and phrases
ACALL ACALL DELAY addr addressing mode ASCII Assembly language baud rate binary bit addresses carry flag Chapter CJNE connected convert data pins decimal decoder discussed DJNZ DPTR EPROM Example execution external interrupt Figure flag bit frequency I/O ports instruction INT1 Intel interfacing interrupt vector table jump latch LCALL LJMP load logic loop machine cycle memory chip memory location microcontroller microprocessor MOV P1 MOV RO MOVX Notice NV-RAM on-chip ROM opcode operand output pointer program counter PSEN pull-up resistors pulse RAM location register bank reset Review Questions SBUF SECTION serial communication SETB TR1 Show signal SJMP Solution square wave stack stepper motor stop bit SUBB subroutine target address TCON timer Timer/counter TMOD transfer transistors True or false voltage Write a program