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I found the relevant concepts in the principle of computer composition, and searched the Internet First, in the performance test, any out of the underlying content, for performance testing, is incomplete, any program, what middleware if there is no operating system and computer support, is meaningless, because in the computer world, there are some concepts need we can grasp and understand, such as: bit, word, length First of all, bit: A bit represents a bits, commonly called a bit, is the small

Believe that every computer users know that the computer connected to the network, the local connection to connect, and send packet bytes and received packet bytes both to normal, the network can be used normally, otherwise there will be such or such a problem. However, sometimes people will encounter the local connection received packet bytes very little situati

Because of the different operating system memory allocation, resulting in the software development process, the need to compile different versions of software, here with VS for example. 1, compile the program according to need to choose different compilation environment: X86 and Win32 bit 32-bit program, X64 64-bit program, can choose different editing conditions to form different bits of software. 2, the basic data type in the code, will be based on the operating system's number of digits alloc

The most basic capacity unit used by a computer to indicate the size of a bucket is Byte: bytes are the units in which information is transmitted over the network (or stored in hard disk or memory. Bytes Open Category: Computer, unit, storage, capacity, optical storage Z tianjiéByte: bytes are the units in which information is transmitted ove

From: http://blog.163.com/wex660@126/blog/static/241530652008111411389746/ Today, my friend has encountered this problem. It seems that I have said it many times, so I will release it to avoid talking about it every time.I. symptomGenerally, this phenomenon is applicable when SQL files are created in the query analyzer. Generally, the following prompts are displayed: "Warning: The table 'xxxx has been created, but its maximum row size (89960) exceeds the maximum number of

This articleArticleThe main purpose is to analyze the storage space used for building the system to avoid the waste of storage device transition and save investment. It also improves the common usage of OracleDataType. IntroductionThe types are as follows:· Char· Varchar· Varchar2· Nvarchar· Nvarchar2· Number· Date The Char length is fixed. For example, if you define char (20), even if you insert ABC, less than 20 bytes, the database will automatic

casecoutsizeof(SS3) //SS3 is also an array of characters, which begins to pre-allocate 100, so it's 100 bits in size.coutsizeof(SS4) //SS4 is also an array of integers, which begins to pre-allocate 100, but the space occupied by each integer variable is 4, so its size iscoutsizeof(Q1) //Q1 and SS2 are similar, so it's 4.coutsizeof(Q2) //Q2 There is a ' \ n ', counted as one, so its space is 3coutsizeof(Q3) //Q3 is a character pointer, the size of the pointer is a fixed value, is 4, so sizeof (Q

Today found a problem, a length set to 2000 bytes of the field, inserting a length of 1000 Chinese characters data, unexpectedly error.A Chinese character accounts for two bytes, which is arguably exactly 2000 bytes. However, by looking at the log, it is found that the length of the inserted data is 3000 bytes.Baidu a bit, the original is a different character se

When a web application displays a string in a browser, due to the display length limitation, it is often necessary to intercept the string before display. However, many popular languages, such as C # and Java, use Unicode 16 (ucs2) encoding internally. In this encoding, all the characters are two characters. Therefore, if the string to be intercepted is a mix of Chinese, English, and numbers, the following string is generated: Code highlighting produced by Actipro CodeHighlighter (freeware)http

Python advanced (IV)-text and byte sequences (Encoding Problems), python bytesMain content of this article Character Bytes Structure and memory View Conversion between characters and bytes-codecs BOM ghost character Continue tomorrow... Python advanced-directory The code in this article is on github: https://github.com/ampeeg/cnblogs/tree/master/pythonadvanced Character '''Character encoding is a

Why ask this question, in the first eight basic data types defined in Java, in addition to the other seven types have a clear memory consumption of bytes, the Boolean type does not give a specific number of bytes occupied, because there is no Boolean type for the virtual machine, When a Boolean type is compiled, it is represented by a different data type, how many bytes