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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Some timers do this by software , some by hardware , and some have both software and hardware controls . The timers in the 8051 have both . The start and stop of the timer are controlled by way of software by the TR ( timer start ) bits ...
In other words if the ITO and IT1 are 0 , meaning that the hardware interrupts are low - level triggered , IEO and IEl are not used at all . The IEO and IE1 bits are used by the 8051 only to latch the high - to - low edge transition on ...
SECTION 11.3 : PROGRAMMING EXTERNAL HARDWARE INTERRUPTS 33. True or false . A single interrupt is assigned to each of the external hardware interrupts EXO and EX1 . 34. What address in the interrupt vector table is assigned to INTO and ...
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The 8051 Microcontrollers
8051 ASSEMBLY LANGUAGE PROGRAMMING
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