computer os systems

value.And rounding to even numbers is used for statistics.There's no concrete implementation in the book.floating point ArithmeticFloating-point addition does not have binding a+b+c! =a+ (b+c) for compiler default optimization strategy, the problem will be x=a+b+c;y=b+c+d; optimize t=b+c;x=a+t;y=t+d;CaseTurn 12345[11000000111001] into an IEEE single-precision floating-point number Put 2 decimal point left 13 bit, 12345=1.1000000111001x2^13 Remove the beginning 1, ad

]) + data[i+1]; } for (; i The second function loops through and the final check will not be missed. The process is optimized by reducing some of the key steps.4. Improve parallelismIn the CPU, the program is translated into assembly instructions, but it is not a single instruction executed sequentially, but the pipeline executes concurrently, that is, multiple unrelated directives are executed together. This is the machine feature of the CPU, and all we have to do is take advantage of thi

Several common methods of installing computer systems Tools/raw Materials Hardware: Computer Method/Step Several common methods of installing computer system The first method: the production of U disk Boot Disk installation system. This method is suitable for most computers, but there are a few

Recommend a book on embedded entry: Embedded system design (Chongqing University Press, author Pens). I recently also took a good look at some of the content, combined with our previous classes to learn some embedded knowledge and the previous operating system and the composition of the principle, with the following summary, is a time for this book to learn the knowledge of a summary, but also the knowledge of the previous study a review. Personally, the learning of embedded

Code.Complete.Second.Edition 2004Bachman compared the ptolemaic-to-copernican change in astronomy to the "change" computer programming in the early 1970s.When Bachman made the comparison in 1973, data processing is changing from a computer-centered view of information system S to a database-centered view. Bachman pointed out this ancients of data processing wanted to view all data as a sequential stream of

More and more hard drives make people have more choices, some people who are playing Linux are starting to try more operating systems, and people using Unix are starting to try Linux, while Windows XP is more convenient to do some work, this article is based on the idea that Make three systems exist in one hard drive and work well. The main content of this article is the hard disk partition and grub configu

Reference"Deep understanding of computer systems"Deep understanding of the Linux kernel"80x86 assembly Language Programming""The design and implementation of the operating system" In order to protect the program and data in memory and share hardware support, in order to provide hardware support for realizing virtual memory, modern CPU not only uses the extended memory segment management mechanism , but also