most important components of a computer--the processor ... 7
Column line-level ........ ............. 8
The column denotes the prefix of the order of magnitude ...... .......... 10
Memory--The instructions and data for storing the computer ....... ....... 13
Input/output devices--the eyes, ears and mouth of the computer ..... ........... 18
The North Bridge and the South Bridge--the fading name ....... ............ 21st
1.2 The semiconductor technolo
frequency of 533MHz to the CPU, with DDR memory and a front-end bus bandwidth of up to 4.3gb/seconds. But as processor performance continues to improve, it poses a lot of problems for the system architecture. The "HyperTransport" architecture not only solves the problem, but also improves the bus bandwidth more effectively, such as the Amdopteron processor, the flexible HYPERTRANSPORTI/O bus architecture a
certain protected system resources, cannot change mode unless an exception occurs
Privileged mode: Free access to system resources and change mode in addition to user mode
System mode: Exception entry is not allowed, same register as user mode, not restricted by user mode
Processor Status
The CORTEX-A8 processor has 3 operating states, which are controlled by the T-bit and J-bit of the CPSR register.
L Ar
execution time. For caching optimization, the essence is data parallelism, each task is divided according to the cache size, Therefore each task processing data scale is basically consistent, each task executes the time to be more certain, but because the parallel task execution completes, needs to merge the data, causes certain performance to descend.
Conclusion
Based on the analysis of the hardware structure of the embedded multi-core processor,
Processor Architecture
ISA
One processor supportsCommandAndByte encoding of commandsCalled itsInstruction Set architecture ISA.
Although the performance and complexity of the processors manufactured by each vendor are constantly improved, different models are compatible at the ISA level. Therefore, ISA providesConcept Abstraction Layer.
This concept abstraction layer is the ISA model: the instruction set en
come up with ways to improve them." ”
3. Clock speed is not the only key word
Double core does not necessarily make your computer clock faster, but it will improve the overall performance of your PC.
This is a subtle technical feature that has a difference. The dual core does not mean that the speed must be faster than the single core processor. If you're thinking about the original clock speed, you sho
This chapter is selected from the Intel official documentation and translated by myself.
Note that the following English word cache is used. If C is in uppercase, that is, cache, it indicates the term "cache". If C is in lowercase, that is, cache, indicates the verb -- indicates saving data to a high-speed buffer storage.
Intel 64 and the IA-32 architecture provide the ability to manage and enhance the execution of multiple processors connec
Co-processorThe coprocessor is used to perform specific processing tasks, such as: The math coprocessor can control digital processing to reduce the burden on the processor. ARM can support up to 16 coprocessors, where CP15 is the most important one.CP15 provides 16 sets of registersAccess CP15 by providing 16 sets of registersOne, coprocessor accessARM microprocessors can support up to 16 coprocessors for various coprocessor operations, and during pr
1. Server processor clock speed
The clock speed of the server processor is also called the clock frequency. The unit is MHz, which indicates the computing speed of the CPU. CPU clock speed = frequency X frequency doubling coefficient. Many people think that the clock speed determines the CPU running speed. This is not only one-sided, but also a misunderstanding of the server. So far, there is no definite f
Q: Often in newspapers and magazines to see the word dual core processor, what is the dual core meaning? What's the benefit?
A: In simple terms, a dual-core processor is the integration of two CPUs on a single wafer. So what is a dual-core processor? What does the concept behind a dual-core
Most processors support at least two modes of execution. Some instructions can only be executed in privileged mode, including reading or altering instructions for control registers such as the program status Word, raw IO instructions, and memory management-related instructions. In addition, a portion of the memory area can be accessed only under privileges.A non-privileged state is often called a user state, because the user program is usually execute
Cpuid commands have two sets of functions. The first function returns the basic information of the processor, and the second function returns the extended information of the processor. Figure 1 summarizes the basic information of the processor that can be output by the cpuid command. The output of the cpuid command is completely dependent on the content of the ea
For wireless system design engineers, it is critical to have a clear understanding of the differences between multithreading (MT) on a single processor and using multi-processor (MP) processing. Cellular phones are the first large-scale application to implement dual-core design. However, dual-core implementation is also applicable to many wireless applications that require high performance and low power con
systems (dos,vm,vse,mvs™,as/400®). After the successful installation, I began to read about the information, when I was "cataloging nodes and databases (cataloging node and database)" This thing confused. The word "Catalog" has a verbal meaning compared to the SYSCAT and SYSIBM catalogues of the past. Sometimes I yell at DB2: "I don't want to catalog anything, I just want to make sure I install DB2 correctly by running a SELECT statement." "After a f
With the growing number of mobile device platforms, and even the momentum to replace the desktop platform, the word "arm" is increasingly appearing in people's eyes, especially on mobile phones or tablet processors, but never see arm's processor, but "the adoption of ARM's latest architecture" processor. In fact, ARM (adanced RISC machines) is not only a generic
Note:This article is part of the [ASP. NET web API series tutorial]. If this is the first time you read this series of tutorials, read the previous content first. 5.1 HTTP message handlers
5.1 HTTP message processor
This article cited from: http://www.asp.net/web-api/overview/working-with-http/http-message-handlers
By Mike Wasson | February 13,201 2Author: Mike Wasson | Date:
A message handler is a class that reads es an HTTP request and returns
Fourth Chapter processor Architecture 4.1 Y86 instruction set architectureDefines an instruction set architecture, such as Y86, that includes defining various state elements, instruction sets, and their encodings, a set of specifications, and exception event handling.4.1.1 Programmer-Visible State① programmer Visible State: Each instruction in Y86 reads or modifies portions of the processor state. The "prog
Extended image content processor Problems
You want to extend the default image content importer to control pixels, or you want to learn the content pipeline ).Solution
Because XNA already provides a content importer that uses an image file as the source and eventually creates it as a Texture2D object, all you have to do is expand this content importer. In this tutorial, you can call the ReplaceColor method of the PixelBitmapContent helper class, which
The previous chapter describes how C is translated into assembler and how the assembler is used. But how is the assembler implemented? For example (add%eax%edx) This instruction, we know its function, how does the processor execute the instruction to get the desired result? -This is the subject of this chapter.(i) Y86 instruction set architectureTo simplify the problem, we do not use the instruction set architecture of Intel and ATT to abstract simpli
string. (First line) Because it's a progressive data connection.,so go on. forloops. and theJavabasically the same, because the line number is from1started, soIthe initial value is1. The termination condition becomes hereInteger.parseint (Vars.get ("dbid_#"))Such a disgusting stuff,dbid_#is throughSQLquery out ofdbidthe number of variables. Seems to be because of the passageVARsof theGetthe method gets all the strings, so it's going to be converted to integer (if the dynamic language is easier)
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