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First, a few concepts:1. From the lifetime of the variable, can be divided into static storage mode and dynamic storage modestatic Storage: How the system allocates a fixed amount of storage space (global variables) during program runDynamic storage: the way in which storage space is allocated dynamically as needed during program operation (1. function parameters, 2 automatic variables, 3 field protection box when function call return address)2. Data storage category contains four kinds:auto (au
following categories (underlining the intersection of different classifications) by its meaning:1) See very much:Auto, register, volatile, goto2) Storage-Related:const, extern, register, volatile, static, auto, signed, unsigned3) data type:char, short, int, float, long, double, struct, union, enum, void4) Logical control:If, else, for, while, do, break, continue, return, default, switch, case, goto5) Speci
1. register variable The keyword regiter requests the compiler to store the variable in the CPU register as much as possible. Note the following points. 1. The register variable must be a type that can be accepted by the CPU register. This usually means that the register var
Register Device Description General purpose Registers 8 32-bit, storing the data being processed Segment Register 6 16-bit, processing memory access Instruction Pointer Register A 32-bit, pointing to the next instruction code to execute Floating-point data registers 8 80-bit, floating point
++ ++ C language deep understanding series-keywords: auto and register Follow the original author to view other blog posts. This article is original on this site. You are welcome to repost it! Reprinted please indicate the source: Http://blog.csdn.net/mr_raptor/article/details/7209452 ++ ++ Keyword Overview Many of my friends may have doubts. Many other C-language books often start from HelloWorld and Data Types in C language. Why should we start fr
Registers are used to store specific content in VIM operations. Most normal commands and some ex commands can specify the registers associated with operations. Registers are also special variables in Vim, so they can be accessed in command lines and scripts to implement some very useful functions. Vim has many different types of registers with different roles and functions. If it is used flexibly, it makes editing work easy and efficient. This article describes the functions and usage of various
This article is written simply because the learning protection model requires this knowledge. Readers can take a look at the content and find out when necessary, there is no need to resist the difficulty. I have to read this article carefully and remember the definitions of each bit in each register. However, if you want to write more articles in the future, remember to come back and check the relevant content. 80386 a total of 7 types of 32-bit regi
How to use the 74ls595 (8-bit output latch shift register) 7 Recommended The use of single-chip microcomputer and 74ls595 (8-bit output latch shift register) 74595 Data End: QA--QH: Eight-bit parallel output, can directly control the 8 segments of the digital tube. QH ': cascaded output. I'm going to take it down to a 595 si end. SI: Serial data input terminal. Description of the control side of 74595:
Multiple segments can be defined in the assembly language source program. Each segment must have a corresponding relationship with a segment register. The statement format for establishing such a ing is as follows: Assume segment register name: segment name [, segment register name: segment name,…] Where: The segment register
Manager agent will not register host with clariion Array Primus self-service EMC Knowledgebase "Manager agent will not register host with clariion array" ID: Emc125015 Usage: 70 Date created: 12/30/2005 Last modified: 06/13/
Http://msdn.microsoft.com/zh-cn/ms227673.aspx ASP. NET Walkthrough: Create and register a custom HTTP Module --> This walkthrough demonstrates the basic functions of the custom HTTP module. For each request, the HTTP module must be called to respond to the beginrequest and endrequest events. Therefore, this module runs before and after processing the request. If ASP. NET applicationProgramIs running in IIS 6.0, you can use the HTTP module to
Http://blog.sina.com.cn/s/blog_6e5b342e0100m87x.html Arm Assembly programming is essentially a programming of CPU registers. So we need to first find out what registers arm has? How are these registers used? Arm registers are classified into two types: common registers and status registers. Register TypeRegister name in assemblyRegisters actually accessed in each modeUserSystemManagementAbortUndefinedInterruptedFast interruptionGeneral registers and
One, introduceThe Extract DAC creates a DAC from an existing db, extracting the definition of DB object and its associated instance-level elements, such as login, and the relationship between login and user.The extraction process creates a DAC package file contains definitions of the database objects and their related inst Ance-level elements. For example, a DAC package file contains the database tables, stored procedures, views, and users, along with the logins T Hat map to the database users.T
):1) For more information, see:Auto, register, volatile, goto2) storage problems:Const, extern, register, volatile, static, auto, signed, unsigned3) Data Type:Char, short, int, float, long, double, struct, union, enum, void4) logical control:If, else, for, while, do, break, continue, return, default, switch, case, goto5) special purposes:Sizeof, typedefI believe that we can understand most of the keywords
When using assembly programming, you must directly operate on hardware resources, such as internal CPU resources, memory and I/O Ports. Therefore, you must learn and remember the name, function, and common usage of the internal CPU registers, thanks to God, there are not many registers. It is also difficult to understand the memory segment management mode, the address representation of the storage unit, and the physical address formation mode. Register
The storage type of a variable determines when the scalar is created, when it is destroyed, and how long his value remains. There are three places where variables can be stored:Normal memory staticRun-time Stack autoHardware Register RegisterThe default storage type of a variable depends on where it is declared: static variablestatics: variables declared outside the code block are always stored in static memory, not the memory of the stack, u
Article source: Click to open the link reason one: the distance is differentDistance is not the main factor, but it is best to understand, so put it on the front. The memory is CPU far away, so it takes longer to read.To3GHzOfCPUFor example, the current can oscillate every second30Billions of times, each time consuming about0.33Na seconds. Light in1In nanosecond time, you can move forward.30Cm. In other words,CPUWithin a clock cycle, the light can go forward10Cm. Therefore, if the memory distanc
The steps to register facades in Laravel are detailed, laravelfacades This article describes the steps for registering facades in laravel. Share to everyone for your reference, as follows: Registering a class as Fcade in Laravel can use the IOC container, which initializes the class once each time it is used, like a singleton pattern, and can invoke a method of the class like a static method, following the steps to
About cuda Register arraysin order to improve the speed of the algorithm in the parallel optimization of some algorithms based on Cuda, sometimes we would like to use Register array to make the algorithm fly generally fast, however, the effect is always passable. Used to be faster than useless, this is why? Haha, to say the point, we define the array of registers in the following two ways:1 Inta[8]; At this
/************************************************************************************************************** ****Original address: http://blog.csdn.net/ce123/article/details/6940349Description: Briefly discusses the interrupt register and the interrupt process of s3c2440. *************************************************************************************************************** ***/ brief discussion on interrupt
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