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A macro is a group of commands grouped together to accomplish a specific task as a single command. In Microsoft Word, a macro is defined as: "A macro is a series of word commands that can be organized together as a single command that makes everyday work easier".
Word uses the macro language Visual Basic to write macros as a series of instructions.
A macro in computer science is an abstraction that replaces a certain pattern of text according to a set of predefined rules. Excel Office automatically integrates the "VBA" high-level programming language, and the programs written in this language are called "macros". Using "VBA" requires a certain programming foundation and a lot of time, so the vast majority of users only use the general tabulation function of Excel, and rarely use "VBA".
The interpreter or compiler automatically replaces this mode when it encounters a macro. For compiled languages, macros occur at compile time, and the tools used to do macroscaling are often referred to as macros. The term macro is also often used in many similar contexts, and is derived from the concept of macros, including keyboard macros and macro languages.
Overwhelmingly, the use of the word "macro" implies the transformation of a small command or action into a series of instructions.
The purpose of macros is to automate frequently used sequences or to gain a more powerful abstraction capability, but this is often the same thing.
Computer languages such as C or assembly language have simple macro systems that are implemented by a compiler or assembler's preprocessor. C's macro preprocessor works simply as a text search and replace, and using an additional text processing language such as M4, C programmers can get more elaborate macros.
Lisp-like languages such as Common Lisp and Scheme have more elaborate macro systems: macros behave like a function deforming its own program text, and can be used to express this deformation in the whole language. A C macro can define a syntax substitution, while a LISP macro can control the computation of a section of **.
The ability to control the order of execution (see Lazy Computation and Non-Limiting Functions) is gained, making newly created syntax structures indistinguishable from those built into the language. For example, if a lisp dialect has cond without if, you can use macros to define the latter by the former. Major extensions of the LISP syntax, such as the object-oriented CLOS system, can be defined by macros.
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- Can you not choose ASUS's low-end board It's a waste of money The graphics card is too scummy Why do you want 6750....Don't pursue video memory too much, your configuration is 512m enough for you.
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Play the journey can be six open,Play CF and other games can watch movies at the same time,This computer can play almost all the current games except for individual 3D games,Very good configuration。
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Generally, your CPU can use GPUA83870K, which is open-core and can be overclocked, and the motherboard can use GIGABYTE A75 without a dedicated GPU.
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Memory plus 4G, you can only talk about the price of sex.
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Well, it's no problem to play games, and the work is enough, nice machine.
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The general game is fine.,Conditional graphics card directly on GTX, and then this memory is too stingy, and the display is also a little smaller.
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The frequency of the memory module is too low, it is recommended to use 1866 or 1600
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The configuration of your computer is relatively high, so there is no problem playing online games.
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The higher configuration is okay.
1. The driver is unstable and incompatible with the system, which is most likely to cause memory cannot be read or file protection. >>>More
The PD 925 (boxed) you said is only about 750 yuan, and the E6300 (boxed) is about 1280 yuan. How much does it cost to see how much it costs? If you're doing interior design, of course the CPU is a little better, and the graphics card is a little better. >>>More
I can't upgrade it, that's to buy a computer.
Well, the second floor, if you have a graphics card like the one on the third floor, let's get one for you It's really depressing, do you understand it after all? Don't come to talk nonsense to others.,The graphics card doesn't just look at the size of the video memory.。。。 >>>More
I'll give you a new price.
e5200 : 450 >>>More