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PIC系列英文原版书籍之1：The PIC Microcontroller - Your Personal Introductory Course 3rd
Preface to the third edition
When I was asked to write a new edition, I carefully read through the book trying
to find how the current edition could possibly be improved. It was clearly a
case of where to begin! With the help of several readers and their helpful emails,
I have ironed out most of the, shall we say, elaborate spelling mistakes. My
thanks therefore to Robert Czarnek, Lane Hinkle, Neil Callaghan, John Wrighte
and Jimmy Gwinutt.
Since the first edition was published, I have received a great number of emails
from readers asking for help with their various PIC projects. I am happy to help,
and will try to answer any questions you may have. However, I have also been
sent PIC programs without a single comment on them, and often without any
indication of what task they are actually meant to perform, with a short message
along the lines of: ‘It doesn’t work.’ One of my favourite emails informed me
that an error ‘of type 0034q . 0089’ kept occurring, and could I please fix it.
These types of emails will seldom meet with a favourable response, simply
because I haven’t a clue what to do. So please put comments everywhere in your
programs, and try to isolate exactly what is going wrong.
One of the major changes in this edition is the replacement of older one-timeprogrammable
PIC microcontrollers with newer Flash versions. These are more
suited to the kind of prototyping and testing that will take place as you go
through the programs in this book, and develop on your own, as each PIC microcontroller
can be programmed many times. These new PIC models can also be
programmed in-circuit, so you don’t even need to remove the PIC microcontroller
from your board when updating the program. A short section introducing
more advanced techniques, such as serial communication, has also been added
to extend the scope of the book.
This book has been updated to conform to Microchip’s trademark guidelines
regarding the use of the word ‘PIC’. PIC is a registered trademark of Microchip
Technology Inc. in the US and other countries, and as such it should only be
used as an adjective followed by an appropriate noun, such as ‘PIC microcontroller’.
If I have missed any instances of a lone ‘PIC’ without a suitable noun,
please read it to yourself as ‘PIC microcontroller’!
A final thanks must go to Max Horsey and the Electronics Department at
Radley College who appear unaware that I have left the college, and continue to
offer me use of their excellent facilities. |
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发表于 2008-7-4 22:00:08
